DEPARTMENT OF MERIDIAN ASTROMETRY. 225 



THE ZONE CATALOGUES OF 1900. 



The introduction to the Albany Zone Catalogues for 1900 has been 

 prepared by Mr. Roy, and the catalogues are now in the hands of the 

 printer. The publication consists of a catalogue of 8,276 stars observed 

 by Professor Lewis Boss in the zone between 20° and 41° of south 

 declination, a catalogue of 2,800 stars observed by Mr. Arthur J. Roy 

 in the zone between 2° of south and 1° of north declination, a short 

 catalogue containing the standard star positions observed in detennin- 

 ing the system upon which the zone observations are based and a 

 number of miscellaneous star positions, and a fourth part containing a 

 few miscellaneous stars observed by Mr. Roy. The appendix contains 

 a list of the proper-motions amounting to more than 10" a century, 

 derived from a comparison of available material with the positions 

 given in zone 20° to 41° of south dechnation. 



STAFF. 



The Director has continued his investigations of systematic stellar 

 motions and related problems. Dr. S. Albrecht, aside from his duties 

 as observer, has carried on his investigations of standards of wave- 

 length. Dr. A. von Flotow has extended his study of the real motions 

 of those stars with observed parallaxes and radial velocities. Mr. S. 

 B. Grant has divided his time between instrumental and computational 

 duties. Mr. H. Jenkins has undertaken sunilar duties. Mr. H. 

 Raymond has continued his investigations of stellar velocity distribu- 

 tion. Mr. A. J. Roy has remained in charge of the observing program 

 and has largely supervised the reductions; his investigation of the 

 San Luis decUnations continues. Mr. W. B. Varnum, besides his 

 duties as observer, has been engaged in the preparation for reduction of 

 past and current work. The computing division consists of Mary E. 

 Bingham, Grace I. Buffum, Livia C. Clark, Mabel A. Dyer, Alice M. 

 Fuller, Florence L. Gale, Bertha W. Jones, Isabella Lange, and 

 Frances L. MacNeill. Three piecework computers have also been 

 employed. 



