DETERMINATION OF ASTRONOMICAL REFRACTION. 



87 



Star 975 

 „ 317 



1905. 



Logr 



Log r c 



d log r 



pv 2 



P 



July 3 



22389 



2-2416 



- 00027 



0-00000098 



2 





, 4 



2-2404 



2-2428 



- 0-0024 



200 



2 





, 5 



22330 



22383 



-0 0053 



361 



1 





, 7 



2-2359 



2-2418 



-00059 



625 



1 





, 10 



2-2308 



2-2324 



- 00016 



972 



3 





, 12 



2-2368 



2-2390 



- 0-0022 



288 



2 





, 14 



22319 



2-2393 



- 00074 



3200 



2 





, 15 



22352 



2-2425 



- 00073 



3042 



2 





, 19 



2-2323 



2-2366 



- 0043 



324 



4 





, 21 



2-2312 



2-2329 



-0-0017 



1156 



4 





, 24 



2-2346 



2-2368 



- 0-0022 



288 



2 





, 25 



2-2318 



2-2345 



- 0-0027 



147 



3 



d log r = - 0-0034 

 p = 28 



00000035 



Star 317 

 „ 975 



1905. 



Logr 



Log r c 



d log r 



pv 2 



p 



July 3 



2-2267 



2-2*94 



-0-0027 



0-00000162 



2 





, 4 



2-2286 



2-2311 



- 0025 



242 



2 





, 5 



2-2209 



2-2263 



-0-0054 



324 



1 





, 7 



2-2245 



2-2306 



- 0-0061 



625 



1 





, 10 



2-2192 



2-2209 



-0 0017 



1083 



3 





, 12 



2-2254 



2-2277 



-00023 



338 



2 





, 14 



2-2212 



2-2287 



-00075 



3042 



2 





, 15 



2-2227 



22303 



- 0076 



3200 



2 





, 19 



2-2204 



2*2249 



- 0045 



324 



4 





, 21 



22191 



2-2208 



-0-0017 



1444 



4 





, 24 



2-2242 



2-2264 



- 0-0022 



392 



2 





, 25 



2-2207 



2-2236 



-0-0029 



147 



3 



d log r = - 0-0036 

 p - 28 



€ 2 = 00000037 



9. Final Results. 

 The following table gives the individual results for each 

 pair. The approximate zenith distances are also tabulated. 

 From the values of e, the weights, given in the fifth column, 

 have been computed and which are now used in all subse- 

 quent combinations. The values of e are in units of the 

 fourth place of decimals. 



