a m Copyrigbted by H D OW AR ‘ GR SS H O , H C GO 1 88 r. C I A , I n trodu cti on . To THE TEACHER In the preparati o n o f this M an ual the writer has endea v ored to treat the u b ec t re en ted in a m e et forc b e man n er a o d s j s p s , si pl y i l , v i c a r Th u trat o n en in a s m u c as o s b e tec n te m . e g, h p si l , h i l s ill s i s gi v , - he outline the work that sho u ld be do n e in the c lass ro o m . T teac her ho u d and n o do ubt w u em en t the e u trat o n s l , ill s ppl s ill s i s in man w a re en t n the ub ec t treated te b te in a y ys , p s i g s j s , s p y s p, r an n tho o u gh and yet attracti v e m er. The a u e o f demonstra tion n o o n er do ubted and in t o e v l is l g , h s o o er it m o d h t t f o w T sch ls wh e is st u s e t e bes res u l s o ll . his is - r The pre emi nen tly t u e in geographi cal and astro n o mi c a l w ork . Lu nar Telluri an is de sign ed to furn ish the ill u stratio n s n ecessary to giv e the pupils a co mprehen si v e u n ders tandi ng o f the relatio n n mo n m in c o n tru t o n s h s o f the earth su and o . It so e c ip , i s si pl s i that the a v erage teacher may u se it to adv antage after a few ’ r d t the an ua h o u s s tu y wi h M l . The teacher will fi nd it adv antageou s to now and then a ssign a to c to o n e o f the u and re u re him to furn c ear and pi p pils , q i ish l n trat o n b u s forc ible demo s i s y e o f the apparatu s . ’ The teacher s atten ti o n is parti c ul arly c alled to the s ectio n in b rt n w en t fi d th o w h c P ro f. E . o e o c c e tor o f e ca i h C l , s i i i Chi g Tribune and we n o w n as a rac t ca a tro n o m er treat the , ll k p i l s , s s ub ec t o f T de . re en tatio n n ew a n redu c ed the j i s H is p s is , h vi g t a ct to th conc ete The au t or c o n at te h r a a bs r e r . h gr ula s t e e ders b r n u o n be n a e to e e t an art c e fro m the en o f P ro f. o bert p i g l p s i l p C l , a nd here ack nowledges o bligatio n s to that es timable and s cho larly gentl eman . The wr ter ac now ed e o b i at o ns to . acv c ar Ph . i k l g s his l g i M M i , — D . o f the c an State No rm a S c o o than w o m there , Mi hig l h l h is — n o b etter au thori ty o n mathemati cal geo graphy so me o f whose i u trat o n th w r ter has embo d d h ll s i s e i i e in t is wo rk . C G arc 1 88 1 . CHI A O , M h I , 1 1 1 8 61 I N D E X . I ntroduction , ’ A ndrews Lunar Telluria n Descr ti n , ip o , How to Ad ust tize Lunar Tellu ia n j r , P re ara tor ork p y W , General D initions gf , Distribution o L /zt a nd Heat f ig , Da s a nd N i /zts E ua l a nd Une ual y g q q , ’ Tbe S u n s A a rent atfi pp P , Clza n e S eason g of , ’ TIze S un s Dec ination l , To nd the Latitude a nd Lon itude o P laces fi g f , Lon itude a nd Time g , T0 find tlze Dif erence of Longitude between Two aces P l , T0 fi nd t/ze Time of S unrise a nd t/ze Length of e un Tb S , Tbe E a rt/z , ’ Moons Motions P /zases E tc . T/ze ; , , Tlze Z odia c S i ns o E ta , g f , , c i ses S ola r a nd Lunar E l p , , eces sion o til e E uinoxes P r f q , ua tion o Time E q f , — I c Tides B P OF. B T n y R COL ER , ’ i s o rews Lunar Telluria n Commendat on f And , ’ n rews "mar uria . ’ A The obe a l. dr wn . b S . A rc o u n ir u mference gl l f the s s c c , a u on the same ca e as the n d h arc S u nti a c rc e p s l globe . Exte t e l i l co m eted and t c rc e o w the z e o f su n u on the ame is pl , his i l sh s si p s ca e as the obe re r s nts th a c rc e o f i u B . he s l gl p e e e e rth . T i l ll m nat o n owin ho a th n The tw t i w f r e u i t e tend . i , sh g s l gh x s C iligh r ho n ho f r h o o n a c c e w w a th t t . T e m b e w e tend D . i l s i g iligh x s ll , n th t and d n he ear sho wi g e ligh ark hemispheres o f the moo . T g h n . ing a t F k eeps the light hem isphere alw ays to ward t e su . E ’ ca en Plate showi ng the in c linatian Of the mo o n s orb i t. G . A l ’ r d L. o nter o w n the o t o n o f the u n ert ca da i n ex . P i sh i g p si i s s v i l d n r m nd fi n d t me o f s u n ra . A on itu a o t e e u ed to y H l g i l i i x , s i The r e and sun et en t of da s ni ts and tw t. is s , l g h y , gh iligh J K h ua c t T e e tor. e lip i c . q L 6 UNAR TELLURIAN MANUAL . To Adjust the Lunar Tellurian . To to n adjust the apparatus agree with the cale dar, m o ve the arm IX u ntil the calendar i nde x G is Opp o site the 21 5t o f Ju ne place the arm i n which the s o uth po le o f o f n arm the gl be is aste ed parallel with the IX , as o n in o r r n n n to n 2 l st sh w cut, b i g the cale dar i dex Ju e and place the ce nter o f the s o cket at the s o uth po le Op po site the mark I o n the semi - circular b race j o i ni ng the n o f o n L o r h e ds circle C . The p i ter sh uld be pa allel wit the arm IX . Raise the m o o n ball u n til the gear wheels at F are dis en a ed rn co - to o r n g g , tu the g wheel the right left u til w/z ite s ide o f o o n o sun o the the m ball is t ward the , dr p o n o r n the c gs i t gear .