PBOCEEDINGS OF THE YORKBHIBE GEOLOGICAL SOCIETY

VOL. 31, PAST 4, NO. 19, PP. 437-443, 13TH MAY, 1959.

INDEX TO VOLUME 31

Accounts, 1956, 68-9; 1957, 322-3. Calciferous Sandstone Series, 304-9. (See also Balance Sheet, and Calcite, 355 ff. Income and Expenditure.) Calcite Mudstone group, 254. Albian, 179. Caledonian folding, 56. Albian-Cenomanian transgression, Callovian clays, fauna, 168. 176. Candleseave Limestone, 24. Alteration, of anhydrite, 357; of Caninia zone, 237. Lake District lavas, 45. Capillary action in sands, 362. Amphiboles, 385 ff. rocks, Geological Anatase, 385 ff. Survey on, 374-8. Angulatum Beds, 161. Carboniferous Slate, 252. Anhydrite, 354 ff. Carden, 405. Annual Report, 1956, 65-78; 1957, Carstone, 178 ff. 319-30. Cauda gatti, 9, 23. Apatite, 385 ff. Cave Oolite, 164 ff. Block, 1, 79, 92. Caveside Gill, 17. Assemblage of microplankton from Ceaseat Beck, 87. the Shineton Shales (Tremado- Cemented shear-planes in the cian), 331-49 (Pis. 16, 17). Pleistocene Middle Sands of Avonian, 235 ff. Lancashire and Cheshire, 359- Aysgarth, 148. 66 (Pis. 19, 20). Cenomanian, 179 ff. Central Province, L. Carboniferous, Bakelite resin for impregnation, 281-92. 363. Chalk, E. Yorks., 179. Balance sheet, 1956, 70-1; 1957, Channel sandstones in Yoredale 324-5. Series, 103, 119. Bealsbeck, 197. Charnia masoni gen. et sp. nov., Beilby Wood, 384. 212 ff. , 190; Barracks pit, 179 ff. Chamiodiscus concentricus gen. et Black , 25. sp. nov., 213 ff. Black Scar, 3. Charnwood Forest, 211; golf course, BLACK, W. W., on the structure of 211. the Burnsall-Cracoe district and Cimmerian folds, 170, 174. its bearing on the origin of the Cleavage in tuffs, 62. Cracoe knoll-reefs, 391-414, (PI. 22). Cliffe Hill quarry, 160, 161. Blaeberry Beck, 6, 7, 9. Sills, 7. Borrowdale Volcanic Series between Compaction of Bowland Shales, Wastwater and Duddon Valley, 407-9. Cumberland, 39-64 (PL 3). Cop Gill, 19. Boulder Clay, E. Yorks., 190 ff.; beds, Yoredale Limestones, Lanes, and Cheshire, 359 ff. 117, 120. Boundary stream, 19. Coralian, 169; limestone, 169. Bowland Shales, 82 ff., 407 ff.; Correlation, Carboniferous, 231-40. overstep, 82. Coxwold-Gilling fault-trough, 351, Branch Gill, 24. 358. Brian Grain, 24. Cracoe, 82, 83, 391; knoll-reefs, Brookite, 385 ff. 391-414. Bucklandi Beds, 161. CEAMPTON, C. B., on the heavy Buried Cliff, E. Wolds, 194. minerals in the Magnesian Lime• Burnsall, 391. stone of , 383-90 (PI. Butterhaw, 405. 21). 437 438 INDEX TO VOLUME 31 [vol. 31

Craven Lowlands, ? Tournaisian DOWNIB, C, on an assemblage of present, 253. microplankton from the Shineton Cravenoceras cowlingense, 4, 20, 27, Shales (Tremadocian), 331-49 82, 84. (Pis. 16, 17). Cretaceous stratigraphy, Market Drewton, 163 ff., 199. Weighton to , 178-82. Drewton Stray Fault, 182. Crinoid banks, 97, 118, 120. Duddon Fault, 59 ff. Crow Limestone. 13, 85; faunal list, Duddon Hall Tuffs, 41, 49 ff. 35. Duddon Valley, 39. Cumberland, 39. Dun Fell field meeting, 72-4. Cyclothems, Yoredale, 94 ff.; mech• DUNHAM, K. C, discusses D. anism, 131-4. Moore's paper, 145; leads field Cymopolia, 215. meeting to Dun Fell, 72; to Middleton-in Teesdale, 326.

Daddymea Edge, 19. Et, basal unconformity, 396-8. Dalefords, 361 (PI. 19). East Grain, 6. DE BOEB, G., Guide to the Eastfield quarry, 160, 165. of the area between Market Eastgill head, 24. Weighton and the Humber, 157- EDWARDS, W., on the Geological 209 (Pis. 8-12). Survey in Yorkshire, 367-81. Deepgill, 6, 9. Elbolton, 402, 405. Deepgill Sike, 4, 17, 19, 20. Ellerker, 200. Delta beds, facies of Yoredale Ellerker Beck, 160, 163 ff. Series, 127 ff.; of Millstone Grit, Elloughton, 166, 198; quarries, 88; in Strines Reservoir, 149; Visean, N.W. Ireland, 266-72. 160 (PL 11). Denudation in catchment areas, Environment, Lower Carboniferous, 228 ff. 154. Devoke Water Fault, 60. JEomarginifera sp., 3. Diastrophism, mid-Dinantian. 259- Epidote, 385 ff. Erosion on Millstone Grit, 149. 61. Erosion surfaces, E. Yorks., 185 ff. Dibunophyllum bipartitum, 94. Erratics, 189 ff. Dibunophyllum zone, 239. Erythrospongia, 94, 109. Dimorphoceras, gen. et subgen., Eskdale granite, 62. 219-20; Eumorphoceras pseudobilingue, 3. D. (Dimorphoceras) kathleenae Everthorpe, 200; railway cutting, Moore, 220 (PI. 14); D. (D.) Kathleenae var. leitri- 160. mense nov., 220 (PI. 14); D. (Metadimorphoceras) hodsoni sp. nov., 223 (PI. 14); Faraday Gill, 8-10. D. (M.) aff. denticulatum Schmidt, Faraday House marine band, 10. 223; Faraday House Sill, 9. D. (Paradimorphoceras) looneyi Faults, on Askrigg Block, 33; Phillips, 222 (PL 14). Burnsall-Cracoe region, 401; in Dimorphoceratidae from the Upper glacial sands, 362; Market Weigh• Visean shales of County Leitrim, ton to Humber, 182-4. Eire, 219-26 (PL 14). Ferriby foreshore, 203; boats, 204. Dimorphoceratidae Hyatt, 219 ff. Ferriby Red Cliff, 196. Dinantian, 235 ff. Field Meetings, 1956, 72-78; 1957, Diornatosphaera angusta gen. et 326-30. sp. nov., 345 (PL 17). FIEMAN, R. J., on the Borrowdale Diornatosphaeridae fam. nov,, 345. Volcanic Series between Wast - Dogger, 163, 164. water and Duddon Valley, Dolomite, 355 ff., 385 ff. Cumberland, 39-64 (PL 3). Donations, 66. Five Yard Limestone, 85, 93 ff., DOSSOR, J., leads field meeting to 112; cyclothem. 113: faunal list. Holderness, 77. 138-44, no. 19] INDEX TO VOLUME 31 439

Fluorite, 385 ff. Haploecia straminea, 166. Folded Permian gypsum of Ripon Hardraw Limestone, 93, 393. Parks, Yorkshire, 351-8 (PI. 18). Hardrow Scar ( = Hardraw) Lime• Folding, on Askrigg Block, 32; stone, 92 ff., 99 ff.; eyclothem, Burnsall-Cracoe district, 399-401. 101; faunal list, 138-44. FORBES, B. G., on folded Permian , 148. gypsum of Ripon Parks, • Hawes Flags, 107. shire, 351-8 (PI. 18). Hawes Limestone, 94, 95; eyclo• FORD, T. D., on Pre-Cambrian them, 96; faunal list, 138-44. from Charnwood Forest, Hearne Beck, 16, 24. 211-7 (PL 13). Hearne Beck Limestone, 23. Fordon field meeting, 74. Heavy minerals in the Magnesian Fossdale Gill, 17, 19. Limestone of Yorkshire, 383-90 lists, 34-6, 138-44. (PL 21). Fossil Sandstone, 22; faunal list, 36. HEMINGWAY, J. E., leads field meeting to Fordon, 74. Hercynian faulting, folding, 32-3. Gale Sike, 6, 8. , 179, 190; railway cutting, Garnet, 385 ff. 194. Gayle Limestone, 93 ff., 96, 393; Hessle Clay, 190, 195 ff. eyclothem, 99; faunal lists, 138- Hesslewood quarries, 195. 44. Himanthalia, 215. Gayle Shale, 96. Hind Hole. 10. Geological Survey in Yorkshire, Hind Hole Beck, 10, 13, 17 ff. 367-81. Holderness field meeting, 77-8. Geomorphology, E. Yorks., 185 ff. Holme-on-Spalding Moor, 189, 200. GEORGE, T. N., on the Lower Hoods Bottom Beck, 13, 17, 20. Carboniferous palaeogeography of HOPKINS, W., discusses D. Moore's the British Isles, 227-318 (PL 15). paper, 145. Girtyoceras Pcostatum, 3. Hotham, 160, 161. Girvanella, 94; band, 93 ff. Howgate Edge, 15. Glacial geology, E. Yorks., 189-202. Howgate Edge Grits, 5 ff. Glacial gravels, E. Yorks., 193 ff.; Hull Corporation pit, 194. sands, 359 ff. Humber, drainage system, 185; Glauconite in Crow Limestone, 13. fault, 182, 185. Goniatities falcatus, 99; sphaericos- Hurlet transgression, 309 ff. triatus, 99. Hydraulic Limestone, 163, 164. Goodham Gill, 6, 9, 14. Hystrichosphaeridae, 333 ff. Goodmanham, 162, 170, 178 ff., 191. Hystriehosphaeridium Deflandre, Grainy Gill, 8 ff., 15 ff. 334 ff.; Grassguards Fault, 60. H. cristatum sp. nov., 338 (P. 16); Grassington, 82 ff., 393. H. cf. digitatum Eisenack, 337 Grassington Grit, 82 ff., 396 ff. (PL 16); Great Scar Limestone, 93 ff., 95; H. hirsutoides Eisenack, 335 faunal list, 138-44. (PL 16); , 10, 15 ff., 84. H. h. var. hamatum nov., 335 Great Sleddale, 10, 18, 33, 83. (PL 16); Great Whinscale Rhyolite, 41, 46. H. longispinum (Eisenack), 335 Green Crag fault, 60. (PL 16); Greenhow, 81. H. I. var. uncinatum nov., 337; Guide to the geology of the area H. multipilosum (Eisenack), 337; between and H. cf. polygonale (Eisenack), 337 the Humber, 157-209 (Pis. 8-12). (PL 16); Gunnerside, 148. H. ramusculosum Deflandre, 338 Gypsum, Permian, fibrous, 356-7; (PL 17); non-fibrous, 353-6. H, trifurcatum (Eisenack), 339; H. tuberatum sp. nov., 338 (PL 17); Haematite, 386. H, veliferum sp. nov., 340 (PL 17); Hangingstone Rocks, 211. H. sp., 340 (PL 16). 440 INDEX TO VOLUME 31 [vol. 31

Impregnation of sands, 363. Leiofusa Eisenack, 345. Impure produetal limestone, Yore• Leiosphaeridae Eisenack, 344. dale Series, 92. Leiosphaeridia Eisenack, 344; L, Income and Expenditure, 1956, fragile sp. nov., 344 (PL 17); L. 68-9; 1957, 324-5. spp., 345. Ireland, framework, 263 ff.; Tourn- Leitrim, Co., 219. aisian, 242 ff.; Visean, 263-81. Lenses, fossiliferous in Chalk, 180. Iron, minerals, opaque, 386; oxides, Library of Yorkshire Geological cement, 361 (PL 20). Society, 65-6. Isopachs, Caleiferous Sandstone Lime-Plate, 117. Series, 308; Dibunophyllum zone, Limestones of Yoredale rocks, 121-5. Wales, 284; Lower Visean, N.W. Limonite, 386. Ireland, 267; Namurian beds, Lingula band in Uldale Sill, faunal Askrigg Block, 11, 12, 16, 20, 22; list, 34. Seminula zone, S. Wales, 261; List of Members, 415-35. Upper Bowland Shales, 397; Lithofacies maps, 148 (PL 5). Visean, Northumbrian trough, Little Weighton pits, 179 ff. 298; Yoredale beds (PL 5). Long Gill, 15, 19, 86. Lonsdaleia floriformis, 94. , 26. JAMES, A. V., leads field meeting to Lower Andesites, 41. Fordon, 74. Lower Bowland Shales, 407. JOHNSON, G. A. L., discusses D. Lower Carboniferous palaeogeo- Moore's paper, 146; leads field graphy of the British Isles, 227- meeting to Dun Fell, 72. 318 (PL 15). Jurassic rocks, south of Market Lower Chalk, 179. Weighton, 159-70; sedimentation, Lower Estuarine Series, 163-4. 171; thinning, 173; work on, 378. Lower Howgate Edge Grit, 18, 84. Lower Lias, S. of Market Weighton, 159. Kaber Fell, 8, 32. Lower Limestone Group, Carboni• Kazakhoceras Ruzhencev, 224-5. ferous, , 95. Kazakhoceras hawkinsi (Moore), 225. Lower Limestone Shales, 243-6. Kellaways Rock, 164; Sandstone, Lower Lonsdaleia beds, 96. 167. Lower Stonesdale Limestone, 15; Kellaways Sands, 164, 167. associated faunal lists, 35. Kettlepot Coal, 21. Kettlepot Ganister, 21, 85 ff. Kettlethorpe, 160; quarry, 167. Magnesian Limestone, heavy miner• Kimmeridgian beds, 169. als, 383 ff. Kiplingcotes, 179 ff., 191 (PL 10). Main Chert, 5-7. Kippax, 383. Main Limestone (Tournaisian), lith- Kirk Deighton, 383 ff. ology, 246-51; shorelines, 249 ff. Kirkella cutting, 181. Main Limestone (Yoredale), 2-4, Knoll reefs, origins, 391 ff.; theories, 83 ff., 92-4, 120-1; faunal list, 394-6. 34, 138-44. Kooyman borehole, 169. and Birkdale field meeting, 327. Mallerstang Edge, 25. Lad Gill, 21, 23-4. Mammaliferous deposits, E. Yorks., Lad Gill Limestone, 23; faunal 197. lists, 36. Maplewell Series, 211. Lad Gill Sill, 23. Maps of Geological Survey, York• Lagoon facies, 254 ff., 304. shire, 369-70. Lake Humber, 199. Marine transgression, Carboniferous, Lancashire-Cheshire Pleistocene, 230 ff.; Hurlet, 309 ff.; North• 359. umbrian trough, 297 ff. Langerton House, 410. Market Weighton borehole, 158. Lavas and tuffs, S.W. Lake District, Market Weighton spillway, 191-2, correlation, 50; origins, 52. 199 (PL 10). no. 19] INDEX TO VOLUME 31 441

Market Weighton upwarp, 157-8, Needlehouse Gill, 6. 170-8. Neodimorphoceras Schmidt, 224-5. Masham field meeting, 75. Newer Drift, E. Yorks., 190. Melton, 169; borehole, 163, 169. Northern () Massifs, L. Melton Bottoms, 179. Carboniferous, 288-92. Memoirs of Geological Survey, Northumbrian Trough, L. Carboni• Yorkshire, 369 ff. ferous, 292-9. Mesochasmoceras sp., 3. North Cave, 160-2. Metadimorphoceras gen. nov., 222 North Cliffe, 159. (PL 14). North Newbald, 160, 199; bore• Micrhystridium Deflandre, 340; M, holes, 162, 169, 184; quarry, 166, robustum sp. nov., 344 (PL 17); 168. M. shinetonensis sp. nov., 342. North Wales, L. Carboniferous, 281 Microplankton from the Shineton ff. Shales, 331 ff. Middle Chalk, 179. Middle Craven Fault, 83 ff. Middle Jurassic, S. of Market Older Drift, E. Yorks., 189. Orionastraea garwoodi, 94. Weighton, 163. Orthotetid bed, 100. Middle Lias, S. of Market Weighton, Overflow Channels, Wolds, 191 ff. 162. Oxford Clay, 164, 169. Middle Limestone, 83 ff., 92 ff., 109; Oxfordian clays, 168; foraminifera eyclothem, 110; faunal list, 138- 44. and ostracods, 169. Middle Limestone Group, Wensley- dale, 95. Middle Sands, 359.

Middleton-in-Teesdale field meeting, P2 movements, 398. 326. Palaeogeography, Carboniferous, Mill Hill, Elloughton, 198. 227 ff. Millstone Grit, correlation, 27-8; Paradimorphoeeras Ruzhencev, 222. erosion, 149. Peat, post-glacial, Humber, 203. Mirk Fell Ganister, 18, 84 ff. Pebbles, ? Tertiary, E. Yorks., 185. Mirk Fell Gill, 4, 18 ff. Peneplains, Tertiary, E. Yorks., Mirk Fell Ironstones, 19. 187. Mirk Fell Ironstone Series, faunal PENNY, L. F., Guide to the geology list, 36. of the area between Market Mississippi delta, sediments com• Weighton and the Humber, 157- pared with Namurian, 28; with 209 (Pis. 8-12); leads field meet• Yoredale Series, 127-31. ing to Holderness, 77. Monazite, 385 ff. Permian gypsum, 351. Monoclines, 58. Permo-Trias, Market Weighton, MOOBB, D., on the Yoredale Series 158; Geological Survey, work on, of Upper Wensleydale and ad• 378. jacent parts of north-west York• Pickersett Edge Grit, 25; fossil list, shire, 91-148 (Pis. 4, 5). 36. MOOBE, E. W. J., on Dimorphocera- Pilton Beds, lithology, 251 ff: tidae from the Upper Visean Pinoceras Ruzhencev, 224. shales of County Leitrirn, Eire, Planorbis Beds, 161. 219-26 (PL 14). Pleistocene, chronology, E. Yorks., Common, 15, 86. 201; rocks, work on, 378-80; sands, 359. Porphyroblasts, 354. Post-glacial history, E. Yorks., 202- Namurian of the north-west quarter 4. of the Askrigg Block, 1-38 (Pis. 1, Potshaw Gill, 19. 2). Pre-Bala folding, 56. NEALE, J. W., Guide to the geology Pre-Cambrian fossils from Cham- of the area between Market wood Forest, 211-7 (PL 13). Weighton and the Humber, 157- Pre-Carboniferous rocks, Geological 209 (Pis. 8-12). Survey on, 374, 442 INDEX TO VOLUME SI [vol. 31

Pre-Cretaeeous folding and erosion, 174. Pre-Millstone Grit unconformity, 82, 84 ff.

Pre-Plb movements, 399. JPre-Planorbis Beds, 161. Preston by-pass, 361 (PI. 19). Publications Fund, 319. Scarborough field meeting, 329. Pyroxenes, 385 ff. Schellwienella sp., Hardrow Scar Limestone, 100. Selenite, 386. Seminula zone, 239. Raft, glacial, South Cave, 200. Senonian, 179 ff. Shales of Yoredale rocks, 125. Rate of erosion, 151. Shear-planes, Pleistocene sands, 359 RAYNEB, D. H., reads paper by D, Moore, 145. ff. (Pis. 19, 20). Record of the rate of erosion on Sheffield Corporation Waterworks, Millstone Grit, 149-56 (Pis. 6, 149. Shineton, brook, 331; shales, 331 ff. 7). Shore-lines, S.W. Province, 254 ff. Red Chalk, 178 ff. Shuichengoceras Yin, sub-gen., 225. Red Scar Gill, 8-9. Reef limestones, Cracoe, 391 ff., 402; Ireland, 273. Reef mounds, 97. Relation between the Yoredale Shunner Fell Grit, 1, 5, 27. Series and the Millstone Grit on Shunner Fell Limestone, 5. the Askrigg Block, 79-90. Shunner Fell marine beds, 4, 26-8; Rhaetic beds, Market Weighton, faunal list, 36. Sillimanite, 385 ff. 159. Richmond Chert Series, 8. Simonstone Limestone, 80, 85, 93 ff., Ring Beck, 160, 168. 105, 393; cyclothem, 105; faunal Ripon Parks, 351. list, 138-44; (Simonside Lime• Risby Park spillway, 193 (PI. 10). stone, 92). Rogan's Seat, 2, 12, 23, 26, 31. Skelterton Beck, 393, 403 ff.; hill, Rollinson Gill, 17. 403 ff. Round Ing Gill, 6. Skelterton Limestones, 393, 404. Slates, 41. ROWEIX, A. J., on the Namurian of the north-west quarter of the Sloe Brae Gill, 24. Askrigg Block, 1-38 (Pis. 1, 2); Smithy Gill, , 3. on the relation between the South Cave, 164, 178 ff.; station Yoredale Series and the Millstone quarry, 160, 167, 199 (PL 9). Grit on the Askrigg Block, 79- South Newbald, 168. 90. South-Western Province, L. Car• Rutile, 385 ff. boniferous, 243-63. Special reports, mineral resources, Gt. Britain (Geological Survey), 370-3. Sphene, 385 ff. Sails, 10-2, 14, 16, 20, 22, 25-6. Stackers Gill, 15. St. Austin's Dale, 157 (PL 8). Staurolite, 385 ff. St. Austin's Stone, 167 (PL 9). Stebden, 405. St. George's Land, 254, 281. Stockdale vein, 1, 15, 33. Samlesbury, 360-1 (PL 19). Stonesdale Limestones, 5, 15 ff., 85; Sandiway, 361. faunal list, 35. Sands and Gravels, glacial, 189 ff., Strand-line, glacial, 200. 199 ff Sands, ? Tertiary, E. Yorks., 185. Strines Dike, 149. Sandstones of Yoredale rocks, 126. Strines Reservoir, 149. Scale Haw Limestone, 83 ff. Structure contours, Cracoe and Scale Park, 83 ff. Burnsall district, 400, 411. no. 19] INDEX TO VOLUME 31 443

Structure of the Burnsall-Craeoe Upper Little Limestone, 8, 85; district and its bearing on the faunal list, 34. origin of the Cracoe knoll-reefs, Upper Stonesdale Limestone, 12, 391-414 (PL 22). 17-8; faunal list, 35. Structures contemporaneous with Namurian deposition, 31. VAUGHAN, A., zonal system, 232. , Yoredale Series, 91 ff. VERSEY, H. C, leads field meeting Swinden, 404. to Scarborough, 329. Veryachium Deunff, 344; V. minu- Tan Hill, 2, 11, 16, 20-3, 30-1. tum sp. nov., 344 (PL 17). Tan Hill Coal, 5, 18-9, 21-2. Visean, facies, bordering St. Tan Hill Grit, 5, 22-3, 25. George's Land, 254-63, 281-4; TAYLOR, B. J., on cemented shear- planes in the Pleistocene Middle rocks, Ireland, 263-81; stage, 237-9. Sands of Lancashire and Cheshire, Void ratio in sands, 362. 359-66 (Pis. 19, 20). Ten Fathom Grit, 9. Terraces, Wolds, 188 ff. Waberthwaite Tuffs, 41-3, 48, 50, Tertiary history, E. Yorks., 185-9. 53-4, 59-60. Thomas Gill, 17. Wallowbarrow Crag Group, 41-3, Thorny Force Sandstone, 95. 49, 51-2, 54, 59-60. Thorpe, 393; Kail, 406. Washer Gill, 19, 21, 24. Threaplands Gill, 403-4. Wastwater, 39 ff. Three Yard Limestone, 85, 93 ff., Wensleydale, Yoredale Series, 91 ff. 115; eyclothem, 115; faunal list, West Stonesdale, 13, 16 ff. 138-44. Wharfe axis, 170. Thwaite Beck, 9 ff., 15 ff., 24. Whirley Grove, 361. Topaz, 385 ff. Whitbian beds, 163. Tourmaline, 385 ff. Whitegate, 361 (PL 19). Tournaisian, Ireland, 242; N. Whitsundale, 10 ff., 13, 16, 20 ff. England, 240 ff., 253; rocks, 240 Whitsundale Beck, 9. ff.; stage, 236-7. Wildboar Fell, II, 12, 14, 16-7, Towthorpe corner, 179. 19-20, 22, 24-5, 30. Transition between Yoredale and WILSON, A.A., leads field meeting Millstone Grit beds, 84. to Masham, 75. Tuffs, origins, 49. Windgaps, Wolds, 187. TURNER, J. S., leads field meeting Windmill Hill, 384. to Mallerstang, 327. Worm Crag Group, 41-4, 46 ff., 53-4. Turonian, 179 ff. Wraywood, 384. Tutty's pit, 194. Tylonautilus nodiferus ss., muts., Yarzibury, 84. 3-4. Yoredale Grit facies, 4. Yoredale limestones, correlation, Uldale Gill, 9 ff., 17. 94; facies, 4. Uldale Sill, 11, 13, 86; faunal list, Yoredale Series, 79; cyclothems, 35. lithofacies and isopachytes, 148 Ulpha Andesites, 41, 50. (PL 5); deposition, 127-31; of Unconformities, Burnsall - Cracoe Upper Wensleydale and adjacent district, 396-9. parts of north-west Yorkshire, Underset Limestone, 83 ff., 92-4, 91-148 (Pis. 4, 5). 117; eyclothem, 118; faunal list, Yorkshire, Geological survey in, 138-44. 367-81. Upper Bowland Shales, 396 ff. YOUNG, A., on a record of the rate Upper Chalk, 179. of erosion on Millstone Grit, Upper Estuarine Series, 164. 149-56 (Pis. 6, 7). Upper Howgate Edge Grit, 20. Upper Lias, south of Market. Weighton, 163-4. Zircon, 385 ff. Upper Limestone Group, Wensley- Zones, Carboniferous, 231-40, 303; dale, 120. Yorks. Chalk, 179. Yorkshire Geological Society

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FIRMAN, R. J., 1917. The Borrowdale Volcanic Series between Wastwater and Duddon Valley, Cumberland. (Vol. 31, No. 2, 26 pp., 1 pi.) 6/9. (Post- free 7/1).

MITCHELL, G. H., 19J6. The geological history of the Lake District. (Vol. 30, No. 22, SJ pp.) 8/-. (Post-free, 8/4).

RAYNER, D. H., 19J3. The Lower Carboniferous rocks in the north of England: a review. (Vol. 28, pt. 4, 8j pp., 2 pis.) 12/6.

ROWELL, A. J. and J. E. SCANLON, 1957. The Namurian of the north-west quarter of the Askrigg Block. (Vol. 31, No. 1, 38 pp., 2 pis.) 10/6. (Post-free 10/10).

MOSELEY, F., 19C6. The geology of the Keasden area, west of Settle, Yorkshire. (Vol. 30, No. 18, 21 pp., 1 pi.) 3/9. (Post-free, 4/1).

ANDERSON, W., and K. C. DUNHAM, 1953. Reddened beds in the Coal Measures beneath the Permian of Durham and south Northumberland. (Vol. 29, No. 2, 13 pp., 1 pi.) 2/9. (Post-free, 3/1). TROTTER, F. M., 19J2. The genesis of a fuel series of rising rank: Top Peat to Fat Bituminous Coal. (Vol. 28, pt. 3, 39 pp.) 12/6. 19J4. The genesis of the high rank . (Vol. 29, No. IJ, 37 pp., 2 pis.) 6/-. (Post-free, 6/4).

HOWARTH, M. K., 195:6. The Scalpa Sandstone of the Isle of Raasay, Inner Hebrides. (Vol. 30, No. 19, 18 pp., 1 pi.) 3/3. (Post-free 3/7).

DOSSOR, J., 19JJ. The coast of Holderness: the problem of erosion. (Vol. 30, No. 9, 13 pp., 2 pis.) 2/6. (Post-free, 2/10).

FORD, T. D., 195;. Blue John Fluorspar. (Vol. 30, No. 4, 16 pp., 1 pi.) 4/3 (Post-free, 4/7).

KENT, P. E., igss- The Market Weighton Structure (Vol. 30, No. 12, 31 pp.) 4/6 (Post-free, 4/10). WELLS, A. J., igrj. The development of Chert between the Main and Crow lime• stones in (Vol. 30, No. 11, 20 pp., 6 pis.) 4/6. (Post- free 4/10).

ROWELL, A. J. and J. E. SCANLON, 1957. The relation between the Yoredale Series and the Millstone Grit on the Askrigg Block. (Vol. 31, No. 4, 12 pp.) 3/3. (Post-free, 3/7).

MOORE, D., 1958. The Yoredale Series of Upper Wensleydale and adjacent parts of north-west Yorkshire. (Vol. 31, No. j, j6 pp., 2 pis.) 12/6. (Post-free, •3/-)-

Notes for the guidance of authors (Vol. 30, No. 7, 6 pp.) 3d. (Post-free)