ASTROXOMY. 219 



modern times. The discoveries recited in Herschel's wonderful series 

 of memoirs have now become part of the common stock of knowledge ; 

 even the most casual reader will care to know how they came about. 



In seeking to supply for special students the first of these great 

 wants, by A Synopsis of the Scientific Writings of Herschel, 

 now publishing by the Smithsonian Institution at Washington, which he 

 has written in connection with Dr. Hastings, Prof. Holden has been 

 led to supply the second also, for the more general reader, in the biog- 

 raphy above named. 



An account of Part II of the Cafalogus Librorum of the Pulkova ob- 

 servatory must be deferred until the next year, this important work 

 having but just reached this country. 



