124 CALIFORNIA ACADEMY OF SCIENCES. [PROC. 30 SER. 



The following tables show the reductions for the new 

 refractions. The column ^ contains the means of the 

 weights of the pairs of stars. The other columns have 

 already been explained. In the grouping of the pairs on 

 the several dates the northern star is written first and the 

 southern star below it. The numbers of the stars given at 

 the tops are arranged in this same order. The pairs which 

 have their northern stars at upper culmination are placed 

 first. It will be noticed that the headings of the columns 

 for these pairs are slightly different from the later ones 

 containing the lower culmination stars. 



Because of very bad "seeing" or of occasional accidents, 

 some of the stars were not observed on some nights. In 

 such cases blanks appear after the dates. No observations 

 have been rejected. 



