I78 REPORTS ON INVESTIGATIONS AND PROJECTS. 



those working on the solar rotation, and finally, the extension of the scope 

 of the Union so as to include general astrophysics and the appointment of a 

 committee to consider stellar classification. 



During their stay on Mount Wilson the visiting astronomers made many 

 observations with the Snow and tower telescopes and with the 60-inch re- 

 flector. 



