INDEX.

PAGE .,cceleration ...... : ...... 3r, 33, 141, 145 Acceleration of Cable Car...... 53 Acceleration of Connecting-rod. . . • ...... 110 Acceleration of Cr oss-head...... 102 Acceler.ation Curves...... s 1 Acceleration, Diagrams of...... 44, 49, 5 r Acceleration Images...... r55, rs7 Acceleration of ...... 102 Acceleration, Polar Diagrams of...... 53, 155 Acceleration, Radial...... 34 Acceleration, Resultant...... 37 Acceleration in Simple Har.monic Motion...... 61 Acceleration, Uniform...... 3 1, 49, 2 r 7 Accumulator, Hydraulic...... 269 Addition, Vector...... 36 Adjustable Escapements...... 237 Adjustable Flui.d Escapements...... : ...... 274 Air.-compressor...... 259 Air-pump, Edwards'...... 269 Alteration of Mechanisms...... 164 Ampere...... 347 Amplitude of Simple Harmonic Motion...... 58 Anchor Escapement...... 238 Anemometer...... 283 Angle, Pitch...... 278 Angular Velocity...... 27, 32 Angular Velocity in Ball-bearings...... 3J6 Angular Velocities, Composition of...... 37 Angular Velocity of Connecting-rod...... 110 Angular Velocity of in Oscillating Engine...... 11 2 Angular Ve•1. oc1ty· 1n"Hk oo es'J 01nt" ...... 316 Angular Velocities in Quadric -chain...... 73 Angular Velocity in Universal Joint...... 316 Annular Whee ...... 203, 209 359 INDEX.

PAGB Anti-parallel Cranks...... 17s Archimedean Drill...... 279 Archimedean Spiral...... 57, 2 16, 327 Arc-lamps, Electric...... 230 . . Atk1nson 's "Cyel e " Gas-engine ...... • ...... 16o Augmentation of Chains...... 166 Augmentation of Mechanisms...... 166 Automobile...... 330 Auxiliary Circle...... 58 Average Velocity...... 29 Axial Pitch...... 288 Axis, Twist...... 279, 294 Axis, Virtual...... 12, 30 5 Axle-box...... 171 ."-.xode...... 12,.191,305 Axode, Twist ...... 294

Babbage's Notation ...... 349 Back of Lathe...... 204 Balance, Roberval ...... 86 Ball-bearings...... 167, 334 Ball-bearings, Angular Velocity in...... 336 Ball-bearings, Relative Spinning in...... 337 Ball-and-socket Joint...... 21 BaseCircle ...... 196 Bearings, Ball ...... 167, 334 Bearings, Roller ...... 331 Bearing, Thrust...... • .. 331, 334 Beam-engine...... 75, 141 Bell-crank Levers...... 220 Belts...... • ..... • • ... • • • • • • • • • • • • • ...... 24, 244 , Crossed...... 245 Belt-gearing between Non-parallel Axes...... 254 Belt-gearing, Variable Velocity Ratio in...... --...... 246 Belt-gearing, Velocity Ratio in...... 244 Belt, Length of...... 246 Belt, Open ...... · · · ...... 245 Belt-shifter...... 220 Belt ...... 255 Belt, Thickness of...... 251 Betancourt...... · · · · ...... · ...... · · · · ...... · 347 Bevel-gear...... • • ...... 317 Bevel-gear, Compound Reverted...... 329 Bevel-gear Cutting-machines...... 323 Bevel-gear, Differential...... • ...... 328 Bevel-gear, Epicyclic...... 328 INDE,'<. 301

PAGE Bevel-gear, Velocity Ratio in...... 329 Bevel-wheels...... ; ...... 3o6, 318 Bevel-wheels, Internal...... 319 Bevel-wheels, Involute Teeth in...... 321 Bevel-wheels, Spiral...... • ...... 327 Bevel-wheels, Teeth of...... 320 Bevel-wheel Teeth, Setting out...... 322 Bevel-wheels, Velocity Ratio in...... ,...... 319 Bicycle, Front-driving, Gear of...... 208 Bicycle, Free-wheel...... 228 Bilgram Gear-cutting Machine...... 323 Blade, Guide...... 283 Block, Breech...... 282, 284 Blower, Root...... 267 Body, Restraining...... 181 Borgnis...... ; ...... • ...... 347 Brake...... 232 Brake, Friction...... 232 Brake, Froude...... 271 Brake-block...... 235 Brake, Strap...... 272 Breech-block...... 282, 284 Bremme's -gear...... · ...... 143, 151 Bricard Straight-line Motion...... 94 Brotherhood Steam-engine...... 173 Buffer-spring...... 259 Burmester, Professor...... 183, 349

Cable-car...... 53 Calibre...... 282 Cam, Cy.:!oidal...... 226 Cam, Cylindrical...... 215, 219 Cam, Globoidal ...... ··226 Cam, Involute...... 219 Cam-pair...... 213 Cam, Positive-motion...... 222, 226 Cam, Rotating...... 215 Cam, Sliding...... 21 5, 219 Cam-train...... 213 . . Cam-trains, Ve loc1 "t y Ra t 10· 1n...... 222 Capstan, Driving-gear of...... • ...... 2 1 1 . . Cartwng"b t' s Stra1g � "b t-l1ne Motion...... 2 1 2 Cell, Peaucellier...... 90 Centre, Permanent ...... 189 Centre, Virtual...... I 2 Centrifugal Pump...... 264. 285 INDEX.

PAGB Centrodes...... 12, 98, 170, 187 Centrodes, Circular...... 190 Centrodes in Quadric Crank-chain...... 72 Centrodes, Reduced...... 170 Centrodes of Slider-crank Chain...... 97 Centrodes, Transformed...... 170 Ch:1ins...... 6, 24, 244 Chain, Closed...... 7 Chain-closure...... 140, 172, 173 Chain-closure of Pairs...... 1 75 Chain, Compound...... 7 Chain, Conic...... • ...... 309 Chain containing Sliding Pairs only...... 138 Chain, Cylindric Crank...... 97 Chain-gearing, Velocity Ratio in ...... 251 Chain, Inversion of...... 9 Chain, Kinematic...... 6 Chain, Pitch...... 253, 331 Chain, Renold ...... • . 254 Chain, Simple...... 7 Chain, Slider-crank...... 97 Chains, Augmentation of...... 1 66 Chains, Crossed-slide...... 168 Chains, Incomplete...... 1 7 2 Chains, Reduction of...... 1 68 Chamber Crank-train...... 251 Chamber Wheel-trains ...... 264 Chamber Wheel-trains, Epicyclic...... 267 Change-point...... 80, 172, 176 Checking-ratchet...... 2.30, 271 Chronometer...... 253 Chuck, Self-centring...... 285 Cir<'le, Auxiliary ...... - .. • ...... 58 Circle, Base ...... - • ...... -...... 196 Circle, Gorge...... 300 Circle, Pitch...... 193 Circular Centrodes...... 190 Circumferential Pitch...... 288 Clamp, Kinematic...... 180 Classification (Hearson's)...... 354 Classification of Mechanisms...... 25, 346 Classification (Reuleaux)...... 351 Click...... 277 Closed Chain...... 7 Closed Pai:-...... - ...... 5 Closure...... 164 INDEX.

PAG3 Closure, Chain...... 140 Closure, Force ...... •. 140, 171, 173, 22: Clutch...... 235 Clutch, Coil...... 272 Cochrane Engine...... 263 Coil Clutch...... 272 Common Pump...... 268 Common Tangent...... 288 Compensating Cylinders...... 132 Composition of Angular Velocities...... 3 .7 . . . Composition of Simple Harmonic J.\>lotions...... 67 Composition of Velocities...... 35. Compound Chain...... 7 Compound Epicyclic Reverted Train...... 207 Compound Reverted Bevel-gear...... 329 Compound Wheel-trains...... 201 Compressed-air Transmission...... 261 Compressor, Air...... 259 Conchoid...... 137 Cone Pulleys...... 246 Conic Chain...... 309 Conic Mechanisms...... 309 Conic Quadric Crank-chain...... 308 Conical Rollers...... 331 Conical Screw ...... 284 Connecting-rod, Acceleration of...... 110 Connecting-rod, Angular Velocity of ...... 110 Connecting-rod of Locomotive...... 82 Connecting-rod, Obliquity of...... 100 Connecting-rod, Triangular...... 175 Constant Acceleration...... 49 Constrained Motion...... 3 Constraint...... 19 Constraint, Degrees of...... 177 Copying-press...... 279 Corliss Engine...... 233 Corliss Valve-gear...... 233 , Oldham's...... 127 Coupling-rod of Locomotive...... 82 Crank...... ·. 71 Cranks, Anti-parallel...... 175 Crank-chain, Conic Quadric...... 308 Crank-chain, Double...... 77 Crank-chain, Lever...... 77 Crank-chain, Quadric...... • ...... 70 Crank-pin, Velocity of...... 102 INDEX.

PAGB Cranks, Parallel ...... : ...... 81 Crossed Belt...... 245 Crossed Screw-chain...... 281 Crossed-slide Chain...... 131, 16S Crossed Slider-crank Chain...... 122 Crossed Swinging-block Slider-crank...... 123 Crossed Swinging Slider-crank ...... I 2 3 Crossed Turning-block Slider-crank ...... 123 Crossed Turning Slider-crank ...... 123 , Acceleration of...... 99 Crosshead, Displacement of...... 99 Crosshead, Velocity of...... 99 Curve, Sine...... 66 Curve Triangle, Equilateral...... 185 Curve, Trochoidal...... 186 Curves, Acceleration...... • .. 5 1 Curves, Cycloidal...... 195 Cutting-machines, Bevel-gear...... • .. 323 " Cycle " Gas-engine, Atkinson's...... 16o Cycloidal Cam ...... • . . 226 Cycloidal Curves...... • . . 195 Cycloidal Wheel-teeth...... 197 . . . . Cylinder, Angular Velocity of, in Oscillating Engine...... 11 . z. . . Cylinders, Compensating...... 132 Cylindric Crank-chain...... 97 Cylindrical Cam ...... :215,:219

Da.shpot...... 235, I>ead-centre...... ••...... 14:2 I>ead-point...... 80, 17-z I>egrees of Constraint...... 177 I>egrees of Freedom...... 19, 1;7 I>escribing Circle...... 197 l)esign, Machine ...... :·--_ ...... 9 Diagrams of Acceleration ...... 44, 49, 51 Diagram of Acceleration of Street-car ...... - . . 46 Diagrams of Displacement...... 3S Diagram of Displacement for Train...... 43 Diagrams, Polar Acceleration...... 155, 16o Dia grams, Polar...... 146 Diagrams, Polar, Velocity...... 16o- Dia�ms of Velocil'�...... • . . • . . . . • . . . . 38. 49 Diagram of Velocity of Street-car...... • • . . • • . . 46 Diagram of Velocity for Train...... 4l Difference, Phase...... 64 Differential Bevel-gear...... • ...... • . • • • • 32S INDEX.

PAGE Differential Pulley-block...... 252 Differential Pump...... 269 Direct-acting Engine...... 99, 1 59 Direct-acting Steam-engine...... 99, 159, 261 Direction...... 28, 156 Displacement, Diagrams of...... 38 Displacement, Polar Diagrams of...... 5 3 Donkey-pump ...... 121 Double-acting Pump...... 269 Double-adjustlllent Plummer-block...... 140 Double Crank...... 7 7 Double Helical Wheels...... 296 Double !.,ever...... 8o Double Slider-crank Chain...... ••••..•..•... 123, 127, 263 Drill, Archi111edean...... 279 Driving-gear of Capstan...... • ...... 211 Duangle ...... 183 Duplex Scean1-pumps...... 132, 168 Duplication of ...... • .• . . • .. 172. 173

Eccentric ...... 145. 153, i64 Eccentric-pin of Paddle-wheel...... 79 Ecole Polytechnique...... 347 Edwards' Air-pump...... 269 Electric Arc-lamps...... 230 Element, Kinematic...... 3 Elements, Expansion of...... 164 Elements. Forms of...... 186 Ellipse...... 126, , 36. 295 Elliptic Chuck...... 127, 130 Elliptic Trammels...... 126 Elliptical Wheels...... 176, 191 Elliptical Wheels. Inequality of...... 192 Elliott, Professor...... 94, 110, 117 Engine, Beam ...... 75 Engine, Cochrane ...... 263 Engine, Corliss...... 233 Engine, . Direct -ac t·1ng ...... 99, 159. 261 Engine, Roat...... 263 Engine, Steering...... 241 English Striking-train...... 239 Envelope...... • ...... 183. 2t3 Epicyclic Compound Reverted Train...... 207 Epicyclic Chamber Wheel-trains...... 267 Epicyclic Bevel-gear...... 328 ...... 205 366 INDEX.

PAGB: Epicycloid...... 197 Equilateral Curve-triangle...... 185- Error due to Obliquity of Connecting-rod ...... 100 Escape-wheel...... 238- Escapernents...... 237 Escapements, Adjustable...... 237 Escapements, Frictional...... 24J Escapements, Periodic...... 237 Escapements, Periodical Fluid ...... 273 Escapements, Pressure...... 27J Escapements, Uniform...... 237 Euler ...... 347 Ewing's Extensometer ...... 178- Example of Angular Velocities in Ball-bearing ...... 34o Expansion of Elements ...... 164 Extensometer. Ewing...... 178-

Feathering Paddle -wheel ...... 77 Field of Restraint...... 18z Fi ring-pin...... 258- First Inversion of Slider.-crank Chain ...... 99 Floa t-lever of Paddle -wheel...... 79 Fluid E.-;capements...... 274 Fluid Links...... 24, 264 Fluid Links in Screw :Mechanisms...... 28z Fluid Ratchet-train...... 26+ Fly-wheel...... 1 7 .3 Follower...... 2 1 .s Follower-pin...... 220 Force Closure...... 140, 171, 173, 221 Formation of Screw...... 276 Forms of Element...... 186 Forms of Teeth in Screw- and \V orm-gearing ...... 29 3 . Fourth Inversion of Slider-crank Chain ...... -...... 120 Frame...... · 7 2 Free-wheel Bicycle...... 228 Freedom...... 19 Freedom, Degrees of...... 1;7 Friction· brake...... 23z Friction Gearing...... 171, 193 Frictional Escapements...... 24J Frictional Rai.chet ...... 228, 271 Froude Brake...... 27 1 Function, Periodic...... 66 Fuse-e...... 253 INDEX.

PAGB • . 0 Gas-engine, A t k1nson' s "Cye1e " ...... 160 Gas-meter...... 274 Gauge, Micrometer...... • 20 Gauge, Tide ...... 66 Gear, Belt-shifting...... 220 Gear, Bevel...... 317 Gear of Bicycle, Driving...... 208 Gear-cutting Machine, Bilgram...... 323 Gear-cutting Machine, Rice...... 325 Gear, Reversing...... 242, 281 Gear, Steering...... 280 Gear, Sun.-and-planet...... 209 Gear-trains...... 191 Gear, Two-speed...... 330 Gear, Valve...... 264. Gear, \V inding...... 252: Gearing, Epicyclic...... 205 Gearing, Friction...... I 7 I, I93 Gearing, Ratchet...... 227 Gearing, Spur...... 1c_-3 Gearing, Wheel...... 1 �o Gearing. Worm...... 285 Globoidal Cam...... 226 Globoidal Screw...... 285 Gorge Circle ...... 300 Governor...... 234, 273 Graham's Escapement ...... 2"8� Guide-blade...... :.83 Guide-pulleys...... 255 Gun-lock...... � ...... 257 Gun, Rifled...... 282

Head, Rudder .." ...... : ...... 281 Hearson, Classification of...... 354 Helical Pitch ...... 288 Helical Surface...... 2 77 Helix...... 295 Hersey Water-meter...... 267 Higher Pairs...... 5, 21, 23, 168, 183 Higher Pairing in Spheric Mechanisms...... 3 r 7 Hindley \Vo rm...... 298 Hob...... 298 Hole, Slot, and Plane...... 178 Hooke's Joint ...... 25, 312 Hooke's Joint, Angular Velocity in ...... 316 Hydraulic Accumulator...... 269- INDEX.

PAGB Hydraulic Machines ...... : 259 Hydraulic Press...... • .. 26o Hydrau lie Transmi�£ion...... • . 261 Hyi:>erbola...... 171 Hyperboloid...... • • • 294 Hypt:rboloidal Wheels...... • .. . • . 298 Hyperboloidai \\"heels. Velocity Ratio in ...... 301 H}·po�ycloid...... ·...... 197 Identity of Mcc-hanisms, Kinematic...... •...... 117 Imag cs, Acceleration...... 155 Ima�e, Velocity...... 147, 152 Incomplete Chain;;...... 172 Incomplete Pairs...... 171 Indicator, Richards...... 87 Indicator, Steam-engine ...... 167 Idle \V h�ls...... 201, 207 Inequality of Elliptical \Vheels...... 192 Inequality of Lobed \\'heels...... 192 Instant...... ' ...... 29 Instantaneous }I ot ion...... 1 1 Instantaneous Velocity...... 29 Internal Bevel-wheels...... 319 Inversion...... 6 Inversion of a Chain ...... ,...... 9 Inversions of Quadr�c Crank-chain...... 76 Inversions of Slider-crank Chain...... 97, 122 Involute ...... : ...... 1941 248 Involute Cam...... 219 Involute Teeth in Bevel.-wheels...... •...... 321 Involute Wheel-teeth...... • ...... 195 Joint, Ball-and.-socket ...... �- ...... 21 Joint, Hooke's ...... 25, 312 Jonval Turbine ...... •...... 283 Joumal ...... 17 1 Kinematic Chain...... 6 Kinematic Clamp...... 180 Kinematic Classification...... 346 Kinematic Identity of ?vlechanisms...... • • ...... 117 Kinematic Link ...... :...... 6 Kinematic Slide ...... • ...... , ...... 18o Kisch's Construction ...·...... 108 Kit.e ...... 83 Klein's Construction ...... 108 Knot...... 27, 35 INDEX.

PAGB Lag...... 64 Lanz...... 347 La the, Back-gear of ...... 204 Leakage...... 26o Length of Belt...... 246 Leonardo da Vinci...... 130 Leupold...... 347 Lever...... 7 1 , 2 16 Levers, Bell-crank...... 2 20 Lever Crank-chain ...... 77 Lever, Double...... 80 Lever-lock...... 230 ...,11.near Ve 1oetty . ... -...... 27 Links, Fluid...... 24, 264 Links, Kinematic ...... 6 Links, Non-rigid...... 24 Links, Tension...... 244 Lobed Wheels...... 19 1 Lobed Wheels, Inequality of...... 192 Lock, Gun...... 257 Lock, Lever ...... 230 Lock, Yale ...... ·...... 232 Locking-ratchet...... 230 Locomotive...... 82, 174 Locomotive, Connecting-rod of...... 82 Locomotive, Coupling-rod of...... 82 Log, Patent...... 283 Lower Pair...... 5, 2 1 Lower Pairing in Spheric Mechanisms...... 308

MacCord, Professor...... 302 Machine...... 1, 2 Machine Design ...... 9 llachines, Hydraulic...... ·...... 259 Machine, Screw-making ...... 221 Machines, Simple...... 2 Mechanical Stoker...... •..: ...• •.. 283 Machines, Theory of...... •••••..• I Mechanisms, Alteration of...... 164 Mechanisms, Augmentation of...... 166 Mechanisms, Classification of...... 25 Mechanisms, Conic...... 309 Mechanisms, Duplication of...... 172 Mechanisms, Kinematic Identity of...... 117 Mechanisms, Orde r of...... 26 Mechanisms, Plane.. .•••••...... 23 370 INDEX.

PAGlt Mechanisms, Reduced...... 168 Mechanisms, Running...... 264 Meter, Gas...... 274 Meter, Water ...... 274 Micrometer Gauge...... 20 Mill, Wind...... 283 Monge...... • . 347 Motion, Constrained ...... 3 Motion, Instantaneous...... 1 1 Motion, Non-plane...... • . 17 Motion, Periodic...... 53, 66, i 13 Motion, Plane...... • 10 Motion, Quick-return...... 114 Motion, Screw ...... • 276 Motion, Simple Harmonic...... 58 Motion, Spheric...... 18 Motions, Straight-line...... • ...... 84, 87

Non-parallel Axes, Belt-gearing between...... 254 Non-parallel Axes, Rope-gearing between ...... 254 .'i on-plane Motion...... 17 Non-rigid Links...... 24, 244 Non-rigid Links in Ratchet-trains...... 268 Non-rotative Steam-pumps...... 168 Normal Pitch...... 288 Nut...... 20, 277

Obliquity of Connecting-rod...... 100 Obliquity of Connecting-rod, Error Due to...... 100 Oldham's Coupling...... 12; Open Belt...... 245 Order of Mechanisms ...... ••....,, ...... 26 Organs, Pressure...... 264 Oscillating Engine...... 112, 262 Oscillating Engine, Angular Velocity of Cylinder in...... 112

Paddle-wheel, Eccentric-pin of...... 79 Paddle-v,heel, Feathering...... 77 Paddle-wheel, Float-levers of...... 79 Paddle-wheel, Radius-rods of...... 79 Pair...... � ...... 3 Pair, Cam...... 213 Pair-closure...... 213, 221 Pair-closure of Chains...... I75 Pairing, Higher...... 23, 168 Pairing, Pressure...... 26o

·- JNL,£X. 371

PAGE Pairs, Incomplete...... 171 . . . Pallet...... 2.39 Pantagraph...... • ...... 84 Pantagraph, Skew...... 85 Pappenheim Pump...... • . . . •...... 267. Parallel Cranks...... 80 Parallel-crank Mechanism...... 174 Parallel-flow Turbine...... 283 ...... Parallelogram of Velocities...... 3.7 ...... Patent Log ...... ; . 283 Pawl...... 277 Peaucellier Cell...... 90. . . Peaucellier Straight-line Motion...... 90 . . Pedestal...... • ...... 140. . . Pendulum...... 67, 238 Pendulum Pump ...... 120 Period of Simple Harmonic Motion ...... 59 Periodic Escapements...... 23 7 Periodic Function...... 66 Periodic Motion...... 66,. 53, 21 3 Periodical Fluid Escapements...... 273 Permanent Centre...... 189 Phase...... 64 Pin, Firing ...... 258 Pin, Follower...... 220 Piston, Acceleration of...... 102 Piston Velocity in Direct-acting Engine ...... JOO Pitch...... 197, 277 Pitch-angle...... 278 Pitch-angle of Screw-wheels ...... 291 Pitch, Axial ...... ·...... 288 Pitch-chain ...... 2.53, . . 33 1 Pitch-circle...... 193 Pitch, Circumferential...... 288 Pitch, Helical...... 288 Pitch, Normal ...... :>88 Pitch-point...... 193 Plane Mechanisms...... 25 Plane Motion ...... IO Planet Wheel ...... 20<) Planing-machine ...... 220 Plate, Wrist...... 234 Plummer-block, Double Adjustment...... 140 Point-paths...... 143. . . Point, Pitch...... 193 . Point of Restraint...... 17 7 2 37 INDEX.

PAGB Polar Acceleration Diagrams...... 53, 146, 155, 16o Polar Velocity Diagrams ...... 53, 146, 160 Pole...... 147, 154 Polygon, Closed...... 149 Positive-motion Cam ...... 222, 226 Press, Copying...... 279 Press, Hydraulic...... 260 Pressure Escapements...... 273 Pressure Organs...... 264 Pressure Pair ...... 24 Pressure Pairing...... 260 Profile of Wheel-teeth...... 194 Projectile...... 282 Propeller, Screw...... • . .. . . 283 Pulley-block, Differential...... 2 52 Pulley-block, Weston Triplex...... • . . • .. 243 Pulleys, Cone...... • ...... 246 Pulleys, Guide ...... 255 Pump, Centrifugal...... 264, 285 Pump, Common...... 268 Pump, Differential...... 269 Pump, Donkey...... 121 Pump, Double-acting...... 269 Pun1p, Pappenheim...... 267 Pump, Pendulum...... 120 Pumps, Steam...... 125 Pump, Worthington ...... ·...... 132 Quadric Crank-chain...... 70 Quadric Crank-chain, Angular Velocities in...... 73 Quadric Crank-chain, Centrodes of...... 72 Quadric Crank-chain, Inversions of...... � ...... 76 Quadric Crank-chain, Virtual Centres of...... 71 Quantities, Scalar...... 35 Quick-return Motion...... 114, 1 18 Rack ...... 195 Radial Acceleration ...... 34, 1 56 Radial-flow Turbine...... 285 Radius-rods of Paddle-wheel ...... : ...... 79 Radius Vector...... 53 Rankine. Professor ...... 90, 302, 348 Rapson's Slide ...... " ...... 132 Ratchet, Checking...... 230. 271 Ratchet.Frictional...... 228, 271 Ratchet-gearing...... 227 Ratchet. Locking...... 230 INDEX. 373

PAGB Ratchet, Releas ing...... • • . . . .. • ...... • . . . • . •• • ...... • 230, 271 Ratchet. Running...... • -• •= .....•••••••••••.- .• • -. •;• 277 Ratchet, Silent...... 229 Ratchet, Stationary ...... - ...... 2;; Ratchet-trains containing Non-rigid Links...... 268 Ratchet-train, Fluid...... 264 Ratchet-wheel...... 277 Reduced Centrodes...... 170 Reduced Mechanisms...... 168 Reduction of Chains...... 168 Relative Displacement of Bodies having Simple Harmonic Motion...... 64 Relative Motion of Bodies having Simple Harmonic Motion...... 63 Relative Spinning in Ball-bearings...... • ...... 337 Releasing-ratchet...... • . . . • ...... 230. 27 r Renold Chain...... 254 Restraint, Field of...... • .. .• . . .. . • ...... 182 Restraint, Point of...... • ...... 177 Restraining Body...... 181 · Resultant ...... 36 Resultant Acceleration...... 3i Reuleaux, Classification of...... 35• Reuleaux, P1ofessor..... 70, 167, 170. 183,_ 186, 237. 247, 262. 264, 275, 34& Reversing-gear...... 242, 281 Reversing-shaft...... 281 Reverted Compound Epicyclic Train...... 207 Reverted Train...... 204 Rice Gear-cutting Machine...... • • ...... 3 25 Richards Indicator...... 8; Rifled Gun ...... 282 Roberts Straight-line Motion...... • ...... • ...... 90 Roben·al Balance...... 86 Roller-1:>earings...... 331 Rollers, Conic=a.1 ...... ·. . . .3,) 1 Rolling ...... : 18 3�3 Root B�ower ...... 267 Root Engine ...... � . .. 263 Roi:,e:s...... - ...... -- ...... •..•.••• • ••• • • • • • • • • . • . 24, 244 Rope-gearing between Non-parallel Axes...... • • • • . • .• ...... 254 Rope-gearing, Velocity Ratio in...... 25 t Rotating Cam ...... - - - .. • . • • • ...... 2? 5 Rotation, '\rirtual...... 1 z Rudder...... � ...... • . • . - ...... 24 r Rudder Head...... � ...... 281 Ruled Surface...... �, z Running Me�hanism.s...... 264 Running ratchet ...... 227

• 374 INDEX.

PACE Safety-valve Spring...... 259 Scalar Quant1t1es...... 35 Scale of Diagrams...... 48 Scott Russell's Straight-line Motion...... 136 Screw...... 20 Screw Chain, Crossed...... 281 Screw, Formation of...... 276 Screw-gearing, Fom1s of Teeth in...... 293 Screw-making Machine...... 221 Screw Mechanisms containing Fluid Links...... 282 Screw Motion...... 276 Screw Pair...... 22 Screw-propeller...... 283 Screw Surfaces...... 276 Screw-thread...... 277, z78 Screw-threads, Conical...... 284 Screw-threads, Globoidal...... 285 Screw-wheels...... 285 Screw-wheels, Pitch-angle of...... 291 Screw-wheels, Velocity Ratio of...... 291 Second Inversion of Slider-crank Chain...... 1 r 2 Self-centring Chuck...... 285 Sense...... 28 Setting Out Bevel-wheel Teeth...... 322 Shaft, Reversing...... 2.31 Shaping Machine ...... ·. 1 i-i- Shifter, Belt...... 220 Shifting-gear, Belt...... 220 Silent Ratchet ...... 229 Simple Chain ...... 7 Simple Harmonic Motion...... 58 Sin1ple Harmonic Motion, Acceleration in...... :--:...... 61 Siinple Harmonic Motion, Amplitude of...... 58 Simple Harmonic Motion, Composition of...... 67 Simple Harmonic Motion, Period of...... 59 Simple Harmonic Motion, Relative Motion of Bodies having...... 63 Simple Harmonic Motion, Velocity in...... 6o Simple Machines...... 2 Sine Curve ...... 66 Skew Bevel-wheels ...... 302 Skew Pantagraph...... 85 Slide Chain, Crossed...... 13 r Slide, Kinematic...... 180 Slider Crank...... I59 Slider-crank, Crossed Turning...... 1 23 Slidel'-crank, Crossed Turning-block...... 123 INDEX. 375

PAGB Slider-crank, Crossed Swinging...... 123 Slider-crank, Crossed Swi nging-block...... 123 Slider-crank, Turning-block...... 263 Slider-crank, Sw inging...... 120, 263 Slider-crank, Sw inging-block ...... 1 13, 26 2 Slider-crank Chain...... 97, 212 Slider-crank Chain, Centrodes of...... 97 Slider-crank Chain, Crossed...... 122 Slider-crank Chain, Double...... 123, 263 Slider-crank Chain, Inversions of...... 97, 122 Slider-crank Chain, Virtual Centres of...... 97 Sliding...... 18 Sliding Cam ...... 215, 219 Sliding Pairs, Chain containing only...... 138 Snail...... 241 �peed...... : ...... 28 Spheric Mechanisms...... 25 Spheric Mechanisms having Higher Pairing ...... 317 Spheric Mechanisms having Lower Pairing...... 308 Spheric Motion...... 18, 304 Spheric Triangle...... 305 Spinning...... 18, 333, 342 Spiral of Archimedes ...... 57, 216, 327 Spiral Bevel-wheels...... 327 Springs ...... 24, 226, 256 Spring Buffer...... 259 Spring Safety-valve...... 259 -wheel...... 229. 25;\, 331 Spur-gearing...... 193 Spur-vi.heels...... 193 Stamp-n1ill...... 214 Stationary Ratchet...... 277 • <::.,.team-engine...... 273 !::,leam-engin� Brotherhood...... 173 Steam-engine, Direct-acting...... 20, 99, 1 59, 26 1 Steam-engine Indicator...... 167 Steam-engine, Oscillating ...... 262 Steam..engine, Three-cylinder...... 1 i3 Steam-pumps...... •25 Steam-pumps, Duplex...... 132. 168 Ste am-pumps, Non-1otative...... 168 Steering-engine...... 241 Steering-gear ...... • • • • • ...... 132, 134. 280 Steering-wheel...... 241 Stoker, Mechanical...... 283 Straight-line Motions...... 84, 87, r �6. 167 INDEX.

PAOB Straight-line :Motion, Bricard...... 94 Straight-line Motion, Ca rtwright's ...... 212 Straight-line Motion, Peaucellier...... 90 Straight-line Motion, Rober ts...... 90 Straight-line Motion, Scott Russell's...... 136 Straight-line Motion, Tchebicheff...... 90 Str.aight-line Motion, Watt...... • 88 Strap-brake...... 27z Str.eet-car, Diagram of Acceleration of...... 46 Str.eet-car, Diagram of Displacement of...... •...... 46 Str.eet-car, Diagram of Velocity of...... 46 Striking-train, English...... 239 Str.ucture...... 2, 70 Sub-normal...... sz Sun-and-planet Gear...... •...... 209 Surface, Helical...... • • ...... 277 Surface, Ruled...... 1 z Surface, Screw...... 276 Swash-plate...... 226 Swinging-block Slider-crank...... 1 13, 262 Swinging Slider-crank Chain...... 1 20, 263 Sylvester, Professor...... 83, 85

Ta ngent, Common...... 288 Tangential Acceler.ation...... 156 Tchebicheff Straight-line Motion ...... 90 Teeth of Bevel-wheels...... 320 Teeth, Cycl.oidal...... 197 Teeth, Involute...... 195 Tension-Jinks...... 244 Tension Pa ir ...... 24 Test-piece...... -: ...... 178 Theory of Machines...... l Th. ickness of Belt...... 251 Third Inver.sion of Slider-crank Chain...... 118 Thread, Scr.ew...... 277, 278 Three-cyl.inder Steam-engine...... 1 73 Thrust-beat.ing...... 331, 334 Tide-gauge...... •...... 66 Tiller...... • • • • ...... 1 33, 135 Train. Cam...... 213 Train, Chamber Crank...... • . . . • • . . 261 Train, Diagram of Displacement for...... 43 Train, Diagram of Velocity for...... 43 Trains, Gear...... • . . 191 Train. Reverted...... -...... 204 '

INDEX. 377

PAGE Trains, Wheel...... 1 91 Trammels, Elliptic...... 1 26 Transformed Cent rodes...... 1 70 Transmission, Belt...... 255 Transmission, Con1pressed-air...... 261 Transmission, Hydraulic...... n...... 261 Tredgold...... 322 Triangle, Spheric...... 305 Triangle, Vector...... 149 Triangular Connecting-rod...... 175 Triangle of Velocities ...... 37, 149 Trigger...... 258 Trochoidal Curve...... 186 Tumbler...... 230 Turbine...... 264 Turbine, Jonval...... 283 Turbine, Parallel-flow...... 283 Turbine, Radial-flow...... 285 Turning-block, Slider-crank...... 263 TurningPairs ...... 2 2 Twist Axis...... 2 79, 294 Two-speed Gear...... 330

Uniform Acceleration ...... 3 1, 49, 2 1 7 Uniform Escapements...... 237 Uniform Velocity ...... n...... 28, 217 Uniform Velocity Ratio...... 1 88 Universal Joint .....n...... n...... 312 Universal Joint, Angular Velocities in ...... n...... 316 Unwin, Professor...... 200

Valve-gear...... 264 Valve-gear, Bremme's....n...... n...... 143, 151 Valve-gear, Corliss...... 233 Variable Fluid Escapements...... n...... 274 Variable Velocity. .n...... 29 Variable Velocity Ratio in Belt-gearing ...... n...... 246 Vector...... 28, 35 Vector Addition...... 36 Vector, Radius..n ...... • • • • ...... • • • • • • • • • • • • • ...... 53 Vector Triangle ...... • • ...... • • • • • . • • . • • • ...... 149 Velocities, Composition of...... 35 Velocities, ParaIle logra m of...... 37 Velocities, Triangle of.. ...n...... • • • ...... 37, 149 Velocity...n...... n...• •. • .....• • • • • • • • ...... n.. 27, 141, 1 45 Velocity and Acceleration, Polar Diagrams of...... 146 INDEX.

PAGB Velocity, Angular ...... 27, 32 Velocity, Average...... 29 Velocity of Cable-car...... 53 Velocity of Crank-pin...... 102 Velocity of Cross-head...... 99 Velocity, Diagrams of...... 38, 49 Velocity Image...... 147, 152 Velocity, Instantaneous...... 29 Velocity, Linear...... 27 Velocity, Magnitude of ...... ·...... 33 Velocity, Polar Diagrams of...... 53 Velocity Ratio in Belt-gearing ...... 244 Velocity Ratio in Bevel-gear...... 329 Velocity Ratio in Bevel-wheels ...... 319 Velocity Ratio in Cam-trains...... 222 . V1e.oc1ty· R'at10 1n'C h'a1n-geanng ...... 251 Velocity Ratio in Hyperboloidal \V heels ...... 301 Velocity Ratio in Rope-gearing...... 251 Velocity Ratio in Screw-wheels...... 291 Velocity Ratio, Uniform ...... "...... 188 Velocity in Simple Harmonic Motion ...... 6o Velocity, lTnifonn ...... 28, 217 Velocity, Variable...... 29 Verge...... 238 Virtual Axis...... 1 2, 305 Virtual Centre...... 12 Virtual Centres in Quadric Crank-chain...... 71 Virtual Centres of Slider-crank Chain...... 99 Virtual Rotation...... 12

Water-meter...... 274 Water-meter, Hersey...... 267 Water-wheel...... 264 Watt, James...... 87 Watt Straight-line Motions...... 88 Weighing-machines...... 171 Weston Triplex Pulley-block...... 243 Whitworth Quick-return Motion...... 118 Wheel, Annular ...... 203, 209- Wheels, Bevel...... 3o6, 31 8 Wheels, Double Helical...... 296 Wheels, Elliptical...... 176, 191 Wheel, Escape...... 238 Wheel-gearing...... 19C>' Wheels, Hy-perboloidal...... 298 Wheels, I die...... 20 r INDEX. 379

PAGI! Wheels, Lobed...... • • • • • • • • • • • • • • • • • • • • 191 Wheel, Planet...... • ...... 209 Wheel, Ratchet...... •.. • • • • • 277 Wheels, Screw...... • • • • • . .. 285 Wheel.:;, Skew-bevel...... • • • • • • •• 302 Wheel, Sprocket...... • 229, 253, 331 Wheels, Spur...... • • • • • • 193 Wheel, Steering...... • • • • . . 241 Wheel-trains...... • • 191 \\'."heel-trains,Chamber. • • • • • • • • • • • 264 Wheel-teeth ...... • • • 191 Wheel-teeth, Cycloidal.. • • • ...... 197 \V heel-teeth, Involute .. • • • ...... 195 Wheel-teeth, Profiles of . • • •• ••••••• ...... 194 Wheel-trains, Compound...... • • • • • • • 201 Wheel, Water ...... • ...... 264 Wheel, Worm • ••••• • • • • .. . . . 286, 290, 297 Willis, Professor...... • • • • .. • • • .. 302, 346 Windmill ...... • • • • • • • • • • • • • • • • • ••••• 283 Winding-gear...... • ...... • • • • • ••. . • • • • . . • • • • . . . 252 Worm. . . • • • • • • • • • • • • 290 ...... , 297 Worm-gearing...... • . . • • • • • • • • • • • • • • • • • • • 285 \\'orm-gearing, Forms of Teeth in. . . • • • .. • • • . . . • ••• • • • • • • • 293 Worm, Hindley. . . . • • • • • • • • • • • • ••• • • • • • • • • • • ...... 298 Worm-wheels. . . • • • • • ••• • • • • • . . 286, 290, 297 Worthington Pump.. . • • • • • • • • • • • • • • • • • • •••• • • • • • • • • • • • • • • • ••••• 132 Wrist-plate...... • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • ••••. , •• 234

Yale Lock...... • . . 232

,

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BRIDGES AND ROOFS. Boller'& Practical Treatise on the Construction of Iron Highway Bridges ...... •••....•••...••..•.••..•.•••••..••..Svo, 2 00 • 's Thames River Bridge .....n...... 4to, pa.per, 5 00 Burr's Course on the Stressee in Bridges and Roof Trusses, Arched Ribs, ant! Smpension Bridges ....••...... Svo, 3 50 Du Bois's J.\,lechanics of }� gineering. Vol. II...... n...Small 4to, 10 00 Foster's Treatise on Wooden Trestle Bridges ..n...... 4to, 5 00 Fowler's Coffer-dam Process for Piers ...... n...... Svo, 2 50 Greene's Roof Trusses ...... n...... n.....Svo, 1 26 " Bridge Trusses ...... n...... n...... n.....Svo, 2 50 " Arches in Wood, Iron, and Stone ...n...... n....Svo, 2 50 Howe's Treatise on Arches ...... Svo, 4 00 " Design of Simple Roof-trusses in Wood and Steel. 8vo, 2 00 Johnson, Bryan and Tumeaure's Theory and Practice in the Designing of Modem Framed Structures...... Small 4to, 10 00 Merriman and Jacoby's Text-book on Roofs and Bridges : Part I.-Stresses in Simple Trusses...... n...... •.8vo, 2 60 Part 11.-Graphic Statics ...... •....·. 8vo, 2 50 Part 111.-Bridge Design. Fourth Ed., Rewritten ...... Svo, 2 50 Part IV.-Higher Structures ...n...... •.....•.....•...8vo, 2 l50 llori11on'1 Memphis Bridge ...... 4to, 10 00 Waddell's De Pontibus, a Pocket Book for Bridge Engineers. 16mo, mor., 3 00 " Speciftcations for Steel Bridges..•....n ...... 12mo, 1 26 Wood's Treatise on the Theory of the Construction of Bridges and Roofs ...... •...... •••..•.....8vo, I ()I Wright's Designing of Draw-spans: Part !.-Plate-girder Draws ...... n...... 8vo, 2 50 Part II.-Riveted-trusa and Pin-connected Long-span Draws. Svo, 2 58 Two parte in one volume...... •...... ••. ...8vo, 8 &O

HYDRAULICS. Beziu's Experiments upon the Contraction of the Liquid Vein Issuing from an Orifice. (Tra.utwine.).....•.•. ";: ...Svo, 2 00 Bovey's Treatise on Hydraulics...... n ••...... 8vo, & 00 Church's Mechanics of Engineering ...... ••..n...... Svo, 6 00 " Diagrams of Mean Velocity of Wat.er in Open Channels · paper, l 50 Coffin's Graphi"-al Solution of Hydraulic Problems ..16mo, mor., 2 IO J'lather'a Dynamometen, and the Measurement of Power.12mo, 3 00 l'olwell'a Water-supply Engineering ...... ••...... •.•.Svo, 4 00 l'rizell's Water-power...... n.•..•...... 8vo, G 00 J'uerte■'s Water and Public Health....n ....n.....••....12mo, IISO " Water-ftltration Works ....n...... ••..•...•. 12mo, !ISi Qanguillet and Kutter'a �neral Formula for the Uniform Flow of Water in Rivers and Other Channels. ( Her- ing and Traut-wine.) ...... n...... •..••.••.•.8vo, '00 Hazen's Filtration of Public Water-suwly .•.n....•n••..••..Svo, 3 00 Bazlehunt's Towers and Tanks for ater-works ..n...... Svo, 2 50 Berschel'• 116 Experiments on the Carrying Capacity of Large, Riveted, Metal Conduits ...... •..n.....Svo, !N 6 )leeo-i's Water-supply. (Comidered Principally from a 8&Di- tary Standpoint.) ...... •n...... Svo, 4 00 Merriman'& Treatise on Hydraulics.....n ...... n...... Svo, 4 00 • Michie's Elements of Analytical Mechanice...... n ...... Svo, , 00 Schuyler's Reservoirs for Irrigation, Water-power, and Domestic Water- supply ...... : ...... :....•..Large Svo, D 00 Tumeaure and Russell. Pubhc Water-aupphee ..n...... n....Svo, 6 00 Wegmann's Design and Construction of Dams ...... 4to, 5 00 " Water-supply of the City of New York from 1658 to 1895 ...... 4t:o, 10 00 Weisbach'1 Hydraulics and Hydraulic Moton. (Du Bob.).. Svo, 6 OI Wilson's Manual of Irrigation Engineering..••n ..n.•..Small Svo, 4 00 Wolff's Windmill u a Prime Mover ....•....•. ..•.•.n.....Svo, S 08 W()()(),'1 Tu.rbinee..n ...... n...... •..••...... •.....8vo, I IO " Elements of Analytical MechMil'S.... •...n...... Svo, 3 00

MATEJlJAJ,S OF ENGINEERING. Baker's Treatise on Masonry Construction ...... 8vo, 6 00 Black's United States Public Works ..n....n...... Oblong 4to, 6 c,o Bovey's Strength of Materials and Theory of Structures.... 8vo, T IO Burr's Elasticity and Resistance of the Materials of Engineer- ing •...... n...... ·...... ••....•.... , ..8vo, & 00 Byrne's Highway Construction..n....•..•...n...... •..Svo, 6 80 " Inspection of the Materials and Workmanship Em- ployed in Construction ...... 16mo, 3 00 Church's Mechanics of Engineering...... n ...... Svo, 8 00 Du Bois's Mechanics of Engineering. Vol. I..n...... Small 4to, 7 60 Johnson's Materials of Construction ....·...... n...Large Rvo, 6 00 Keep's Cast Iron ...n...... ••.....••...•.Bvo, •• Lanza'& Applied Mechanics ...... •••.•••.•...•••Svo, 'I. Martens's Handbook on Testing Materials. (Henning.) .2 v ., 8vo, 7 60 Merrill's Stones for Building and Decora tion ...... Svo, 6 00 Merriman'& Text-book on the Mechanics of Materials ...... 8vo, 4 00 Merriman's Strength of Materials ...... n...... n....12mo, 1 00 Metcalfe Steel. A Manual for Steel-users ....n...... 12mo, 2 00 Patton's Practical Treatise on Foundations ...... n...... 8vo, 5 0G Rockwell's Roads and Pavements in France ..n...... 12mo, 1 26 Smith's Wire: Its Use and Manufacture ...... Small 4to, 3 00 " Materials of Machines..n.....n...... n...... n.....12mo, 1 00 Snow's Principal Species of Wood: Their Characteristic Proper­ ties. (In pre-paration.) Spalding's Hydraulic Cement ...... •...... 12mo, 2 oc, " Text-book on Roads and Pavements ..n...... 12mo, 2 00 Thurston's Materials of Engineering...... 3 Parts, Svo, 8 00 Part 1.-Non-metallic Materials CJf Engineering and Metal- lurgy ...... •..•..••..••..•....••..••.•....8vo, 2 c,o Part 11.-Iron and Steel...... 8vo, 3 80 Part 111.-A Treatise on BraMea, Bronza and Other Alloys and Their Constituents...... n...... n...... •...Svo, 2M Thumon's Text-book of the Materials of Construction .•...Svo, 6 00 Tillson'1 Street Pavements and Paving M&teria.ls...... 8vo, '00 Waddell'& De Pontibus. (A Pocket-book for Bridge Engineers.) 16mo, morocco, 3 00 .. Specifications for Steel Bridges ...... •..•.12mo, 1 II Wood'• Treatise on the Resistance of Material&, and an Ap- pendix on the Preeervation of Timber...... Svo, I 00 • Elements of Analytical Mechanice...... ••... 8vo, • 00 7 RAU,WAY ENGINEERING. ..ndrews's Handbook for Street Railway !Engineers. 3x5 in. roo.r., 1 25 Jerg's Buildings and Structures of American Railroads... 4to, 5 00 Brook.&'& Handbook of Street Railroad Location.. l6mo, morocco, 1 50 Butte's Civil Engineer's Field-book...n ...... 16mo, morocco, 2 50 Crandall's Tranaition Curve ...... 16mo, morocco, 1 60 " Railway and Other Earthwork Tables...... Svo, 1 50 Dawson's Electric Railway• and Tramways .Small 4to, half mor.; 12 60 " "nEngineeringn" a.nd Electric Traction Pocket-book. 16mo, morocco, 4 00 Dredge's History of the Pennsylvania Railroad : (1879.) .Paper, 5 00 • Drinker'• Tunneling, Explosive Compound&, and Rock Drill.a. 4to, half morocco, 25 00 Jl'isher'a Table of Cubic Yards ...... n...... Cardboard, 25 Godwin'• Railroad Engineers' Field-book and Explorers' Guide. 16mo, morocco, 2 50 Howard's Transition Curve Field-book ...... 16mo, morocco, 1 60 Hudson's Tables for Calculating the C' ubic Content& of Exca• vatiom and Embankment&..n ...... Svo, 1 00 Nagle'• Field Manual for Railroad Engineers ....16mo, morocco, 3 00 Philbrick's Field Manual for Engineers...n .....16mo, morocco, 3 00 Pratt and Alden's Street-railway Road-bed...... Svo, 2 00 llearles'• Field Engineering ...... 16mo, morocco, 3 00 " Railroad Spiral. ...n...... 16mo, morocco, 1 50 Taylor's Prismoidal Formula, and Earthwork ...... 8vo, 1 60 • Trautwin«i• Method of Calculating the Cubic Content. of Ex­ cavations and Embankments by the Aid of Dia- " 0 0 2 • Tfe'"�!l d. �tic�· �f L�yi�-o;;iCi� ��i�; -��:� OO for Railroads ...... 12mo, morocco, 2 GO • " Croea-eection Sheet ...... Paper, 21 Webb's Railroad Construction...... n...... Svo, 4 00 Wellington's Economic Theory of the Loca.tion of Railwa.ys.. Small 8vo, I> 00

DB.AWING. kn'• Kinematice of Machinery .•...n...... Svo, 2 ISO • Bartlett's Mechanical Drawing ...... 8vo, 3 00 Coolidge's Manual of Drawing ..n...... 8¥o, paper, 1 00 Durley'& Elementary Text-book of the Kinematics of Machines. (In preparation.) Hill's Text-book on Shadee and Shadows, and Perspective.. Svo, 2 00 Jon•'• Machine Design : Part !.-Kinematics of Machinery ...... Svo, 1 50 Put ll.-Form, Strength and Proportions of Pa.rte...... 8vo, 3 00 KacCord.'1 Element.a of Descriptive Geometry ...... Svo, 3 00 • Kinematica; or, Practical Mechanism ..n...... Svo, 6 00 • Mechanical Drawing ...n...... •....•.•...4to, 4: 00 " Velocity Diagrams...... n...... Bvo, 1 50 • V&bm'• Deeeriptive Geomeky and Stone-cutting .....•.8vo, 1 IO Vah.n'• lndU8trial Drawing. (Thompson.) ...... n...... 8vo, 3 IO Reed'• Topographical Drawing and Sketching...... n...... 4:to, I> 00 lteid'• Course in Mechanical Drawing...... n...... 8vo, 2 00 • Text-book of Mechanical Drawing and Element&ry Ma- chine Design•••...... •...... •.••..•••••.8vo, I 00 .i,imon'• Principlee of Mechanism...... n....n...... ••..Bvo, 3 00 8 Smith's Manual of Topographical Drawing. (McMillan.) .Svo, 2 60 Warren's Elements of Plane and 8olid Free-hand Geometrical Drawing ...... n...... 12mo, 1 00 " Drafting Instruments and Operations ...... 12mo, 1 25 " Manual of Elementary Projection Drawing .... 12mo, 1 50 " Manual of Elementary Problems in the Linear Per- spective of ]form and Shadow ...n...... n.....12mo, 1 00 " Plane Problems in _g1ementary Geometry ...... 12mo, 1 25 " Primary Geometry ...n...... 12mo, 76 " Elements of Descriptive Geometry, Shadows, and Per- " spective ...... Svo, 3 50 " General Problems of Shades and Shadows ...... Svo, 3 00 Elements of Machine Construction and Drawing ..Svo, 7 50 " Problems, Theorems, and Examples in Descriptive Geometry ...... Svo, 2 60 Weisbach's Kinematics and the Power of Transmission. (Herr- mann and Klein.) ...... 8vo, 5 00 Whelpley's Practical Instruction in the Art of Letter En- graving ...... n...... 12mo, 2 00 Wilson's Topographic Surveying ...... n...... Svo, 3 60 Wilaon'a Free-hand Perspective....n •...... Svo, 2 60 Woolfs Elementary Course in Descriptive Geometry ..Large Svo, 3 00

ELECTRICITY AND PHYSICS. Anthony and Brackett's Text-book of Physics. (Magie.) Small Svo, 3 00 Anthony's Lecture-notes on the Theory of Electrical Measur- menta ...... 12mo, 1 00 Benjamin's History of Electricity ....n.•...... n...... Svo, 3 00 Benjamin'• Voltaic Cell..n ...... ••.•••....••.n...... 8vo, I 00 C-!aBBen'a Qantitative Chemical Analysis by Electrolysis. Her- rick and Boltwood.) ...n...... •.....Svo, 3 00 Crehore and Squier's Polarizing Photo-chronograph ...... Svo, 8 00 Dawson's Electric Railways and Tramways .. Small 4to, half mor., 12 IO Dawaon's "nEngineeringn" and Electric Traction Pocket-book. 16mo, morocco, 4 00 ll"lather's Dynamometers, and the Measurement of Power ..12mo, 3 00 Gilbert's De Magnete. ( Mottelay.) ...... n...... Svo, 2 60 Hol man's Precision of .Measurements..n ....n...... Svo, 2 00 " Telescopic Mirror-scale Method, Adjustments, and Testa ...... arge 8vo, 76 L&ndauer's Spectrum Analysis. (Tingle.) ..n...n...... Svo, 3 00 Le Ch.atelier's High-temperature Measurements. (Boudouard- BurgeBS.) ...... · �,...... 12mo, 3 00 Ub'1 Electrolysis and Electrosyntheeis of Organic Compounds. (�enz.) ...... • ...... 12mo, 1 00 Lyona'e Treatiae on Electromagnetic Phenomena ...... Svo, I 00 • Michie. Elements of Wave Motion Relating to Sound and Light ...... n...... Svo, 4 00 Niaudet's Elementary Treatise on Electric Batteries (Fish- back.) ...... 12mo, 2 GO • Panhall a.nd Hoba.rt's Electric Generaton.. Small ,to, half mor., 10 00 Ryan, Norris, and Roxie's Electrical Machinery. (In preparation.) Thurston's Stationary Steam-engines.•..n ...... Svo, 2 60 • Tillman. Elementary Lessons in Heat..n...... n...... Svo, 1 60 Tory and Pitcher. Manual of Laboratory Physics.. Small Svo, 2 00 9 LAW. • Davia. Elemen ts of Law ...... •n...... 8vo, 2 GO • " Treatise on the Military Law of United States ..Svo, 7 00 • ��. 760 .Manual for Courts-martial ..n....n...... n.....16mo, morocco, 1 60 Wait's Engineering and Architectural Jurisprudence ...... Svo, 6 00 Sheep, 6 &e " Law of Operations Preliminary to Construction in En­ gineering and Architecture ...... •..•...... Svo, 6 00 Sheep, 6 60 '' Law of Con tracts..•. ....•.•.....••••••.••..•....8vo, 3 (N) Winthrop's Abridgment of Military Law...... 12mo, 2 A

MANUFACTURES. Beaumont's Woollen and Worsted Cloth Manufacture ....12mo, 1 IO Bemadou's Smokeless Powder-Nitro-cellulose and Theory of the Cellulose Molecule.. ..n...... •...... 12mo, 2 M Bolland's Iron Founder ...... 12mo, cloth, 2 60 " " The Iron Founder" Supplement ....n.....n.....l2mo, 2 IO " Encyclopedia of Founding and Dictionary of Foundry Terms Used in the Practice of Moulding ....l2mo, 3 00 Eissler's Modem High Expiosives ...... Svo, 4 00 E11'rnnt's Enzymes and their Applications. (Pre1cott.)..n. Svo, 3 00 Fitzgerald's Bost

• J4ATHE14ATICS . :Baker's Elliptic Functions ...... n...... •....•..8vo, 1 IO • BB.88's Elements of Differential Calculus ...n...n...•..... 12mo, 4 00 Brig,re's EJements of Plane Analytic Geometry....n •.....12mo, 1 0G Chapman'� Elementary Coune in Theory of Equationa... limo, 1 • Com pton's Manual of Logarithmic Computations...... 12mo, 1 50 10 Davi.e's Introduction to the Logic of Algebra...... Svo, 1 IO *Dickson's College Algebra ...... : ...... Large 12mo, 1 60 Halsted's Elements of Geometry ...... n...... 8vo, l 76 " Elementary Synthetic Geometry ....n....n...... Svo, 1 50 • Johnson's Three-place Logarithmic Tables: Vest-pocket size, pap., 16 • 100 copies for G 00 • Mounted on heavy cardboard, 8 X IO inches, 25 10 copies for 2 00 " Elementary Treatise on the Integral Calculus. " Small Svo, 1 60 " Curve Tracing in Cartesian Co-ordinates...... 12mo, 1 00 Treatise on Ordinary and Partial Differential Equations ....n...... Small 8vo, 3 60 " Theory of Errors and the Method of Least Squares ...... 12mo, l. 50 • " Theoretical Mechanics ....n...... _ ...12mo, 3 00 Laplace's Philosophical Essay on Probabilities. (Truscott and Emory.) ...... n...... 12mo, 2 00 • Ludlow and Bass. Elements of Trigonometry and Logarith- mic and Other Tables ...... 8vo, 3 00 " Trigonometry. Tables published 6epa.rately.. Each, 2 00 Merriman and Woodward. Hig-her Ma thematics ...... Svo, 5 00 Merriman'& Method of Least Squares....n ...... Svo, 2 00 Rice and Johnson's Elementary Treatisen· on the Differential Calcul us ...... Small Svo, 3 00 " Differential and Integral Calculus. 2 vols. in one ...... n....••.....Small 8vo, 2 50 Wood'• Elements of Co-ordinate Geometry .....•...•...... Svo, 2 00 " Trigometry: Analytical, Plane, and Spherical.... 12mo, 1 00

MECHANICAL ENGINEERING. MATERIALS OF ENGINEERING, STEAM ENGINES AND BOILERS. ::Baldwin's Steam Heating for Buildings ...... •..12mo, I IO Barr's Kinematics of Machinery ...... Svo, 2 50 • Bartlett's Mechanical Drawing ...... n...... Svo, 3 00 Benjamin's Wrinkles and Recipes...... 12mo, 2 00 Carpenter's Experimental Engineering ...... n...... Svo, 6 00 " Heating and Ventilating Buildings ...... 8vo, 4 00 Clerk's Gas and Oil Engine ...... n.....Small Svo, 4 00 Coolidge's )lanual of Drawing ...... n...... 8vo, paper, 1 00 Cromwell's Treatise on Toothed Gearing ...... n...... 12mo, 1 60 " Treatise on Belts and Pulleys ..n...... 12mo, 1 60 Durley's Elementary Text-book of the Kinematics of Machines. (In preparation.) .ll'lather'aDynamometers, and the Measurement of Power ..12mo, 3 00 " Rope Driving ...... n...... 12mo, 2 00 Gill's Gas an Fuel Analysis for Engineers ...... 12mo, l 26 Hall's Car Lubrication ...... n...... •...... •..12mo, 1 00 Jones's Machine Design : Part !.-Kinematics of Machinery .....n...... Svo, 1 60 Part II.-Form, Strength and Proportions of Part.a...... Svo, 3 oe Kent's Mechanical Engineers' Pocket-book.... 16mo, morocco, 6 00 Kerr'1 Power and Power Tra.namiasion...... Svo, 2 00 l 1 MacCord's Kinematics ; or, Practical Mech&nism ...... Svo, 6 00 " Mechanical Ora wing ...... •..•..•...... 4to, 4 00 " Velocity Diagrams ...... •..•.••....•...Svo, 1 50 Mahan's Industrial Drawing. (Thompson.) ..•...... , ....Svo, 3 50 Poole's Calorific Power of }uels ...... n...... •...... Svo, 3 00 Reid's Course in Mechanical Drawing ...... n...... Svo, 2 00 " Text-book of �IechaniCfl Drawing and Elementary Machine Design...n ...... Svo, 3 00 Richards's Compressed Air ...... n...... 12mo, I 50 Robinson's Principles of Mechanism ....n...... Svo, 3 00 Smith's Press-working of Metals ...... n...... Svo, 3 00 Thurston's Treatise on .Friction and Lost Work in Machin- err and Mill Work ...... n...... n...... Svo, 3 00 " Animal as a Machine and Prime Motor and the Laws of Energetics ...... n...... n...... 12mo, I 00 Warren's Elemen tsof Machine Construction and Drawing ..8vo, 7 GO Weisbach's Kinematics and the Power of Transmission. (Herr- mann-Klein.) ...... 8vo, 6 00 " Machinery of Transmission and Governors. (Herr- mann-Klein.) ...... 8vo, 6 00 " Hydraulics and Hydraulic Motors. (Du Bois.) .Svo, 5 00 Wolff's Windmill as a Prime Mover ...... n...... 8vo, 3 00 Wood.'1 Turbine& ...n...... •.•...•...... 8vo, 2 50 MATERIALS OF ENGIBE.t:RTNG. Bovey's Strength of Materials and Theory of Structures ..Svo, 7 GO Burr1a Elasticity and Resistance of the Materials of Engineer- ing • • • • • • • • • • • • • • ...... •....•.•....•.....Svo, 5 00 Ohurch's Mechanics of Engineering ..n...... n...... Svo, 6 00 Johnson's Materials of Construction ...... n..n...... Large Svo, 6 00 Keep's Ca.st Iron ...... - ...... Svo, 2 50 IADA-'e Applied Mechanics...... n...... 8vo, 7 50 M.artens's Handbook on Testing Materials. (Henning.)..n..Svo, 7 GO Merriman'a Text-book on the Mechanics of Materials.... 8vo, 4 00 " Strength of Materials ...... •..•...•..•.12mo, I 00 Metcalf'& Steel. A Manual for Steel-users ..n...•n...... 12mo, 2 00 Smith's Wire: Its Use and M&nufacture ...... Small 4to, 3 00 " Materials of Machines...... n...... 12mo. 1 00 Thunton's Materials of Engineering..•...•••.•••. 3 vols., Svo, 8 00 Part Il.-Iron and Steel...... • . . . . • • . • ...... Svo, 3 50 Part 111.-A Treatise on Brasses, Bronzes and Other Alloys and their Constituents ...... n...... --: ..... Svo, 2 50 Thunton's ·rext-book of the Materials of Construction ....Svo, 5 00 Wood's Treatise on the Resistance of Materials and an Ap- pendix on the Preservation of Timber...... Svo, 2 00 " Elements of Analytical Mechanics ...... •..•.....Svo, a oo S'J'EAV ENlilNES AND BOILERS. �ot'a Reflectiona on the Motive Power of Heat. (Thurston.) 12mo, 1 GO Dawaon's " Engineering " and Electric Traction Pocket-book. . 16mo, morocco, 4 00 Ford'& Boiler Making for Boiler Makers ..n.•.•...... n•..18mo. 1 00 0088'8 Locomotive Sparks ...... Svo, 2 00 Hemenway's Indicator Practice and Steam-engine Economy. · 12mo, 2 00 Button's Mechanical Engineering of Power Plant.a...... Svo, 6 00 " Heat and Heat-engines ...... n...... Svo, 6 00 12 Kent's S�-boiler Economy...... Svo, 4 00 Kneaea'a Practice and Theory of the ...... Svo, 1 50 MacCord'e Slide-...... Svo, 2 00 Meyer's Modem Locomotive Construction ...... •....4to, 10 00 Peabody's Manual of the Steam-engine Indicator ..•....•.12mo, 1 GO " Tables of the Properties of Saturated Steam and Other Vapors ...... 8vo, 1 00 " Thermodynamics of the Steam-engine and Other Hea.t--engines ...... 8vo, Ci 00 " Valve- for Steam-engines ...... Svo, 2 50 Peabody and Miller. Steam-boilers ...... Svo, 4 00 Pray's Twenty Years with the Indicator ...... Large Svo, 2 C50 Pupin's Thermodynamics of Reversible Cycles in Gases and Saturated Vapors. (Osterberg.) ...... 12mo, l 26 Reagan's Locomotive Mechanism and Engineering...... 12mo, 2 80 Rontgen's Principles of Thermodynamics. (Du Bois.) ....Svo, 6 00 Sinclair's Locomotive Engine Running and Management ..12mo, 2 00 Smart's Handbook of Engineering Laboratory Practice ..12mo, 2 50 Snow'a Steam-boiler Practice...... Svo, 3 00 Span§ler's Valve-gears ...... Svo, 2 50 Notes on Thermodynamics...... •...... 12mo, 1 00 Thurston's Handy Tables.....•...... •...... Svo, 1 50 " Manual of the Steam-engine ...... 2 vole., 8vo, 10 00 Part !.-History, Structure, and Theory ...... Svo, 6 00 Part II.-Design, Construction, and Operation ...... Svo, 6 00 Thurston's Handbook of Engine and Boiler Trials, and the Use of the Indicator and the Prony Brake ...... Svo, 5 00 " Stationary Steam-engines...... •...... •.. Svo, 2 50 " Steam-boiler Explosions in Theory and in Prac- tice ...... 12mo, 1 60 " Manual of Steam-boilers, Their Designs, Construc- tion, and Operation ....•...... : .....Svo, 5 00 Weisbach's Heat, Steam, and Steam-engines. (Du Bois.).. Svo, 5 00 Whitham's Steam-engine Design...... Svo, 5 00 Wilson's Treatise on Steam-boilers- (Flather.) ...... 16mo, 2 50 Wood's Thermodynamics, ·Heat Motors, and Refrigerating Machines ...... •...... •...... 8vo, 4 00 MECHANICS AND MAOfilNEltY. Barr'11 Kinematics of Machinery ...... 8vo, 2 50 Bovey'11 Strength of Materials and Theory of Structures.. Svo, 7 50 Chordal.-Extract.e from Letters...... 12mo, 2 00 Church's· Meehanica of Engineering ...... •...... Svo, 6 00 " Notes and Examples in Mechanics...... 8vo, 2 00 Compton's First Lessons in Metal-working...... 12mo, I 50 Compton and De Groodt. The Rpeed Lathe... ..••..•.....12mo, I &O Cromwell's Treatise on Toothed Gearing...... 12mo, 1 50 " Treatise on Belts and Pulleys ...... •...... 12mo, 1 50 Dana's Text-book of Elementary Mechanics for the Use of Colleges and Schools...... •....•...... 12mo, 1 50 Dingey's Machinery Pattern Making ...... •...... 12mo, 2 00 Dredge's Record of the Transportation Exhibits Building of the World's Columbian Exposition of 1893 ..•..4to, half mor., 6 00 Du Bois's Elementary Principles of Mechanics: Vol. 1.-Kinematica ...... ••...•...•...• ...•..•.•...8vo, I 50 Vol. ll.-8-tatics...... •...... 8vo, 4 00 Vol. m.-Kinetics ...... Svo, 3 50 Du Bola's Mechanics of Engineering. Vol. I ...... Small 4to, 7 50 " " " " " Vol.II ...... Small 4to, 10 00 18 Durley'• Elementary Text-book of the Kiuem&tice of Machinea. (In preparatMm.) Fitzgerald's Boston Machinist ..••...•••...... •••••••..•.16mo, 1 00 Flat.her'• Dynamometera, and the Measurement of Power. 12mo, 3 00 '' Rope Driving .••••••.•••••••••.••••••••••••••12mo, 2 00 Goss'a Locomotive Sparks ..•....••••.•••••.••..•••••••••..8vo, 2 00 Ball's Car Lubrica.tion.. ••••••••.•..•••••••••••••••••••.12mo, 1 00 Holly's Art of Saw Filing ....••..••••••••••••••••••••••.18mo, 71 • Johnson's Theoretical Mechanics ...... •••••...... 12mo, 3 00 Johnson'• Short Course in Statics by Graphic and Algebraic Methods. (In preparation.) Jonea'e Machine Design: Part 1--Kinematica of Machinery ••••••••••••..•••••.•.Svo, 1 60 Part 11.-Form, Strength and Proportiona of Parts..•. Svo, 3 00 Kerr'■ Power and Power TrauRIDiBRion•• ••••••••••••••.•Svo, 2 00 Lanza'• Applied Mechanics.. •.•..••...•.•..••••••••••••.Svo, 7 60 MacCord'a Kinematics; or, Practical MechaniBJD •••••••••.Svo, 6 00 " Velocity Diagrams•• ••••••••••••.•••••••••••••8vo, 1 6() Merriman'& Text-book on the Mechanics of Materiala ...... Svo, 4 00 • Michie'• Element& of Analytical Mechanics .•.••••••••••.8vo, 4 00 Reagan'• Locomotive Mechanism and Engineering••••••• 12mo, 2 00 Reid'■ Course in Mechanical Drawing ..•...••••••••.•••••.8vo, 2 00 " Text-book of Mechanical Drawing and Elementary Machine Deaign...... Svo, S ()0 Richards'& Compre88ed Air ...•••••.•••••••.•••••••••.•••12mo, 1 50 Robinson'• Prir.ciplee of Mechanism .•..••••••••••..•••.•..Svo, 3 00 Ryan, Norrie, and Hoxie'& Electrical Machinery. (In preparation.) Sinclair'& Locomotive-engine ltnnning and Man•�ment.. 12mo, 2 00 Smith's Pre•working of Metala..• -.•.•.....••...• ...•...Svo, I OI " Mau-rials of Machines ...... 12mo, 1 00 Thurston's Treatise on Friction and Lost Work In Machin- ery and Mill Work .••••....•.••.....•.....Svo, 3 00 " Animal as a Machine and Prime Motor, and the Lawe of Energetics.... •.•.....•.•...... 12mo, I 00 Warren'• Element. of Machine Oonatructlon and Dr&wi� ..Bvo, 7 GI Weiabach'a Kinematics and the Power of TranamiSBion. (Herrman-Klein.) .•..•....••••.•.•.•••.8vo, 6 00 " Machinery of TransmiBBion and Governors. (Herr- (man-Kleia.) ...... ••••••••••••••.••..8To 1 G 00 Wood'a Elementi of Analytical Mechanics .•••••.••.•..•..Svo, 3 00 " Principles of Elementary Mechanics••••••.•••••• 12mo, 1 26 • Turbinea .....••...... ••....•••••.•••- •....8vo, 2 60 The World'• Columbian Expoeition of 1893 .•.•.••••.•.•.•••.Ito, 1 00 METALLURGY. Egleeton'a Metallurgy of Silver, Gold, and Mercury : Vol. 1.-Silver ...... •..••.••••••••••••••••.••..•..8vo, Vol. II.-Gold and Mercury.•••.• .•••••••••..•.•••.•..Svo, TTM 60 •• Iles's :Lead-smelting...... •...... •...•••..•..12mo, 2 50 Keep'• Cast Iron ...... •....•.••..•.•••.•..••.•.•••.•..8vo, 2 60 Kunhard t'e Practice of Ore Dressing in I 'Urope.•...... 8vo, 1 60 Le Chatelier'1 High-temperature Measurement.a. (Boudouard- Burgesa.) •••••••••••••••••••••••••••••••••••••••121DO, 3 0G Metcalf■ Steel. A Manual for Steel-Ulen...... 12mo, 2 00 Smith's Mat.-rials of Machines...... ••..12mo, 1 00 Thurston'• Materials of Engineering. In Three Parta...... 8vo, 8 00 Part Il.-lron and St.eel ...... •.•••.....••.•.•••••••••..8vo, 3 80 Part m.-A Trea.tile on Brao1e■, Bronw and Other Alloys an.d Their Conatituenta.•••.•..•••.. ••••.•••.•.•....8vo, I IO 14 'MINEJI.AtOGY.

Burlnger'e Deecription of Minero.la of Commercial Value. Oblong, morocco, 2 &t Boyd's Resources of Southwest Virginia ...... Svo, 3 00 " Map of Southwest Virginia ...... Pocket-book form, 2 00 Brush's Manual of Determinative Mineralogy. (Penfield.) .8vo, 4 00 Chester'• Catalogue of .Mmerah...... ••..8vo, paper, l 08 Cloth, l 26 • Dictionary of the Names of Minerals ...•...... 8vo, 3 60 Dina'• System of M:neralogy. . . • . ••.•.Large Svo, half leather, 12 IO " First Appendix to Dana's New." System of Mineralogy." Large Svo, l OU " Text-book of Mineralogy ...... ••.••••••••••.•...8vo, 4 00 " Minerals and How to Study Them .•....•...•..•..12mo, l GO " Catalogue of American Localities of Minerals.Large 8vo, l 00 • Manual of Mineralogy and Petrography ....•.....12mo, 2 00 P.gleaton's Catalogue of Minerals and Synonyms .••..•....8vo, 2 60 HUMak'a The Determination of Rock-forming Minerals. (Smith.) ...... •...... Small 8vo, 2 00 •Penfield'• Notee on Determinative Mineralogy and Record of Mineral Testa...... •••...... 8vo, paper, GO :&oeen'>uBCh's Microscopical Physiography of the Rock-making Minerals. (Idding's.) ...... 8vo, lS 00 • Tillman's Text-book of Important Minerals and Rocks ..8vo, 2 00 Williams'& Manual of Lithology ...... 8vo, 3 00

M1N1NG. Beard'• Ventilation of Mines...... 12mo, 2 50 Boyd'• Reaourcea of Southwest Virginia...•...... Svo, 3 00 " Map of Southwest Virginia ...... Pocket-book form, 2 00 • Drinker'• Tunneling, Explosive Compounds, and Rock Drilla ..•••••...•.•..••..••••••••••.••.4to, h&lf morocco, 2li ()0 Elaler'11 Modern High Exploaives...... 8vo, 4 00 Fowler's Sewage Works Analyses ...... 12mo 2 00 Goodyear's Coal-mines of the Westem Coast of the Unitecif. S'taLt:ea •.••••••••••..••••••••••••••••••••••••••••l 2mo, 2 50 lhleeng's Manual of Mining ...... •...... Svo, 4 00 .. Des's Lead-smelting ...... 12mo, 2 50 Kunhardt'• Practice ot Ore Dressing in Europe ...•...•..•...8vo, l 60 (YI)riacoll'a Notea on the Trea.tment of Gold Orea.•••••.... Svo, 2 00 Sawyer'• Accident.a in Minea.. .•••••.••.•..•••� ...... Svo, 7 00 W&lke'• Lectures on Explosive■••••••••••••••••••••••••.. Svo, 4 00 Wileon'• Cyanide Processes...••• •••..•••••.••••••.•••.••12mo, 1 60 WUaon'• Chlorination Proce111. ••.••••••••..•.•••.•••...12mo, 1 50 wn.on's Hydraulic and Placer Mining .••••••.•.•••.•.••12mo, I 00 Wllaon'• Treatiae on.' Practical and Theoretical Mine Ventila- tion ..••...... •...... •.•...... 12mo, 1 21

SANITARY SCIENCE. Nwell'a Sewerage. (Designing, Construction ud Malnteance.) 8vo, 3 OI • Water-supply Engineering•••••••.•••••.•••••..Svo, 4 00 hert.'a Water and Public Health...... • ••••••.12mo, 1 GO " Water-ftltn.tion Worb.....•..•....•.•....•..12mo, 2 SO 15 Gerhard's Guide to Sanitary HoUBe-inspection ...... 16mo, I 00 Goodrich's Economical Disposal of Towns' Refuse ...Demy 8vo, 3 GO Hazen'& Filtration of Public Water-supplies...... ••...Svo, 3 00 Kiented's Sewage Disposal...... •.....12mo, 1 26 Leach's The Inspection and Analysis of Food with Special Reference to State Control. (In preparatwn.) Mason's Water-supply. (Considered Principally from a San­ itary Standpoint. 3d Edition, Rewritten ...... Svo, '00 " Examination of Water. (Chemical and Bacterio- logical.) ...... •...... ••••.••...l2mo, I 26 Merriman's Elements of Sanitary Engineering...... Svo, 2 00 Nichols'& Water-supply. (Considered Mainly from a Chemical and Sanitary Standpoint.) ( 1883.) ...... Svo, 2 60 Ogd.en'a Sewer Design...... 12mo, 2 00 • Price's Handbook on Sanitation ...... 12mo, I 60 Richards's Cost of Food. A Study in Dietaries...... 12mo, Richards and Woodman's Air, Water, and Food from a. Sani- 1 01 tary Standpoint ...... 8vo, 2 00 Richard.s's Cost of Living as Modifl.edby Sanitary Science .12mo, 1 00 • Richards and Williams's The Dietary Computer ...... Svo, 1 60 Rideal'1 Sewage and Bacterial Puri1leation of Sewage ...... 8vo, 3 GO Tumeaure and Russell's Public Water-supplies ...... 8vo, 6 00 Whipple's Microscopy of Drinking-water ...... 8vo, 3 60 Woodhull's Notes on Military Hygiene ...... •...... 16mo, l 60

ltlISCELI,ANEOUS. Barker's Deep-sea Soundings ...... 8vo, 2 00 Emmou's Geological Guid•book of the Rocky Mountdn Ex­ cunion of the Intema.tional Congresa of Geologists. Large Svo, l 60 Ferrel's Popular Treatise on the Winds ...•...... •...... 8vo, 4 00 Haines'a American Railway Management ...... 12mo, 2 80 Mott's Composition, Digestibility, and Nutritive Value of Food. Mounted chart, 1 26 " Fallacy of the Present Theory of Bound ...•...... 16mo, 1 00 Rickett.s's History of Rensaelaer Polytechnic Institute, 1824- 1894 ...... •..•...... •.Small 8vo, 3 00 Botherha.m'• Emphui1ed New Testament...... Large Svo, z 00 " Critical Emphasised New Testtnnent ..•....12mo, 1 GO Steel's Treatise on the Diseases of the Dog...... Svo, 3 60 Totten's Important Question in Metrology ...... •....8vo, 2 50 The World's Columbian Exposition of 1893 ...... 4to, 1 00 Worcester and Atkinson. Small Hospitals, Establishment and Maintenance, and Suggestions for Hospital Architecture, with Plana for a Small Hoepital...... •.....12mo, 1 16

HEBREW AND flHALD'tE TEXT-BOOXS. Green'• Grammar of the Hebrew Language...... 8vo, 3 00 " Elementary Hebrew Grammar ...... 12mo, I 26 " Hebrew Chrestomathy...... Svo, 2 00 Geeenius's Hebrew and Chaldee Lexicon to the Old Teata.ment Scriptures. (Tregelles.) ...... Small 4to, half morocco, 5 00 i.tteria'a Hebrew Bible ...... •...... 8vo, 2 26 16