216 



CARNEGIE INSTITUTION OF WASHINGTON. 



Several nebulae have been included in the observing program. The 

 following values of their parallaxes have been determined for three 

 fields : 



The value for N. G. C. 5194 is preliminary, as it was derived from 10 

 exposures only. For Barnard's star of large proper motion the pre- 

 liminary parallax, also from 10 exposures, is +0^519=1=0^005. 



During the middle of the night, when the parallax factors are too 

 small for measures of distance, the work on stars of large proper motion 

 has been continued. First-epoch plates have now been taken for 

 170 stars, while for 12 fields second-epoch plates have been secured. 

 No new companions, except that of Pi 2^ 123, mentioned in the last 

 report, have been found. It should be noted that most of the fields 

 for which second-epoch plates have now been secured are those of stars 

 with very large proper motions, whose fields have been under observa- 

 tion for considerable time; three of them were already known to have 

 companions. 



For the reduction of the parallax measures Mr. van Maanen has had 

 the assistance of Miss Davis for part of the time, and, more recently, 

 that of Miss Wolfe. 



STELLAR PHOTOMETRY. 



The observational part of the investigations in stellar photometry 

 by Mr. Scares and Mr. Shapley includes 522 photographs, all made 

 with the 60-inch reflector and distributed as follows: Selected Areas, 

 208; clusters, 189; variable stars, 55; color photographs of stars, 19; 

 miscellaneous, 51. 



Photographic Magnitudes for the Selected Areas. 



So far as the original program is concerned, the observational part 

 of this investigation, which is in the hands of Mr. Seares, is now prac- 



