262 CARNEGIE INSTITUTION OF WASHINGTON. 



Miss JojTier has given all her time to stellar photometry; 113 scale 

 plates for the Selected .\reas have been measured and reduced and 

 measures and partial reductions were made for 45 photographs for star 

 colors. 



Miss McClees has measured and reduced 8 photographs of sun-spot 

 spectra and 20 photometric plates of Selected Areas. The greater part 

 of her time has been devoted to miscellaneous computing. 



Miss Miller has assisted with the solar investigations of Mr. St. John. 

 She has measured 20 sun-arc plates and detennined the wave-lengths 

 on 10 separate photographs of solar and arc spectra for comparison 

 with the results from the sun-arc plates. She has also measured several 

 plates for the Einstein effect and 14 plates for the separation of close 

 pairs of lines. 



Mrs. Monk continued with the work in stellar spectroscopy up to 

 the date of her resignation on June 1 ; 600 spectrograms were mea- 

 sured and the greater part of them reduced. Reductions to the sun 

 and star constants were calculated, the screw of one measuring machine 

 was investigated for periodic error, and four test plates for the figure of 

 the 100-inch mirror were measured. 



As in the past, Miss Richmond has given her time mainly to stellar 

 photometry; 119 Selected Area photographs were measured and 

 reduced in addition to 45 plates which were measured for star colors. 

 Test plates for the 100-inch mirror and spot-spectrum photographs 

 were also measured. 



Miss Shumway has continued to serve as recorder and computer in 

 connection with the stellar spectroscopic work. 



Miss Stone joined the Division on June 1 to fill the vacancy caused 

 by the resignation of Mrs. Monk. 



Miss Ware has given much time to the measurement of the sun-arc 

 photographs and the separate plates of sun and arc spectra taken for 

 the investigation of the influence of anomalous dispersion. She has also 

 measured the separation of close pairs of lines on a long series of plates 

 fonning a part of the investigation of the systematic errors affecting 

 measures of this kind. A few solar-rotation plates have been measured 

 and a number of microphotometer curves have been registered. 



Miss Winn joined the Division on August 1 to fill the vacancy caused 

 by the resignation of Miss McClees. 



Miss Wolfe has continued the reductions relating to the sun's general 

 magnetic field. Results for 21 additional days, involving 63 least- 

 squares solutions, are now available. A preliminary least-squares 

 reduction for rotation period and inclination of the magnetic axis 

 has also been completed. Miss Wolfe has also done much miscellane- 

 ous computing, a good deal of photogra])hic work, including prints of 

 solar photographs and charts of Selected Areas, and for six months 

 served as librarian. 



