8o4 



POPULAB SCIENCE MONTHLY. 



faint nebulae ; observation of planets, satellites, and comets ; pho- 

 tographic and spectroscopic investigation of conditions of the 

 sun ; researches on the spectra of fixed stars and nebula? ; motion 

 of stars in the line of sight. The Yerkes Observatory will, of 

 course, be used only by advanced students capable of undertak- 



FiG. 11. The TjiLEScoPE, Yerkes Obsekvatokv. 



ing important and original investigation. The ordinary instruc- 

 tion for undergraduates and elementary students will continue to 

 be given in the city at the university itself and at Kenwood Ob- 

 servatory. It would be a mistake to imagine that up to the pres- 

 ent time the university has made no contribution to astronomical 

 science. Important studies have been conducted by Prof. Hale, 



