338 



Rutherfurd Photographic Measures. 



Table II. — Corrections for Refraction. 



Plate i. 



Plate 2. 



Plate 3. 





«" — * 







*" — s 







o" — s 





P' 





n — p. 



P- 



X io». 



s 



7C — p. 



P> 



X io». 



s 



9T — p. 



330° 



+.290 



u 

 0.0 



350° 



+ .284 



O.O 



IO° 



-f.284 



O.O 



340 



.289 



—0.8 



O 



.283 



O.5 



20 



.283 



O.5 



350 



.287 



— 1.4 



10 



.282 



I.O 



30 



.282 



I.O 



O 



.284 



— 1.9 



20 



.280 



— 1.4 



40 



.280 



— 1.4 



IO 



.281 



— 2.2 



30 



.278 



—1.6 



5o 



.278 



— 1.6 



20 



.278 



— 2.2 



40 



•275 



—1.6 



60 



.275 



— 1.6 



30 



.274 



— 1.9 



50 



•273 



—1.4 



70 



•273 



—1.4 



40 



.271 



— 1.4 



60 



.271 



—1.0 



80 



.271 



— 1.0 



50 



.270 



—O.8 



70 



.270 



— 0.5 



90 



.270 



— 0.5 



60 



.269 



O.O 



80 



.269 



0.0 



IOO 



.269 



0.0 



70 



.270 



+ 0.8 



90 



.270 



4-0.5 



no 



.270 



4-0.5 



80 



.271 



+ 1-4 



IOO 



.271 



4-1.0 



120 



.271 



4-1.0 



90 



.274 



+ 1.9 



no 



•273 



+ 1.4 



130 



•273 



4-1.4 



loo 



.278 



+ 2.2 



120 



•275 



4-1.6 



140 



•275 



4-1.6 



110 



.281 



4-2.2 



130 



.278 



+ 1.6 



150 



.278 



4-1.6 



120 



.284 



+ 1-9 



140 



.280 



+ 1-4 



160 



.280 



4-1-4 



130 



.287 



+ 1.4 



150 



.282 



4-1.0 



170 



.282 



4-1.0 



140 



.289 



+0.8 



160 



.283 



4-0.5 



180 



.283 



4-0.5 



150 



.290 



0.0 



170 



.284 



0.0 



190 



.284 



0.0 



160 



.289 



—0.8 



180 



.283 



—0.5 



200 



.283 



— 0.5 



170 



.287 



—1.4 



190 



.282 



— 1.0 



210 



.282 



— 1.0 



180 



.284 



—1.9 



200 



.280 



—1.4 



220 



.280 



—1,4 



190 



.281 



— 2.2 



210 



.278 



—1.6 



230 



.278 



— 1.6 



200 



.278 



— 2.2 



220 



•275 



—1.6 



240 



.275 



—1.6 



210 



.274 



—1.9 



230 



.273 



—1.4 



250 



.273 



—1.4 



220 



.271 



—1.4 



240 



.271 



— 1.0 



260 



.271 



— 1.0 



230 



.270 



—0.8 



250 



.270 



—0.5 



270 



.270 



— 0.5 



240 



.269 



0.0 



260 



.269 



0.0 



280 



.269 



0.0 



250 



.270 



+0.8 



270 



.270 



4-0.5 



290 



.270 



4-0.5 



260 



.271 



+ 1-4 



280 



.271 



4-1.0 



300 



.271 



4-1.0 



270 



.274 



+ 1.9 



290 



•273 



4-1.4 



310 



•273 



4-1.4 



280 



.278 



-f-2.2 



300 



•275 



4-1.6 



320 



•275 



4-1.6 



290 



.281 



-[-2.2 



310 



.278 



4-1.6 



33° 



.278 



+ 1.6 



300 



.284 



+ i-9 



320 



.280 



4-1.4 



34o 



.280 



4-1.4 



310 



.287 



+ 1.4 



330 



.282 



4-1.0 



35o 



.282 



4-1.0 



320 



.289 



4-o.8 



34o 



.283 



+0.5 







.283 



4-0.5 



