10 



COMPARATIVE ZOOLOGY. 



[Jan. 



most tempting invitation to take charge of the great entomo- 

 logical collection in the Berlin Museum, in order to cast his 

 lot with us. It is no slight encouragement to a young insti- 

 tution like the Museum that such an investigator prefers to 

 continue his work here, rather than become the successor of 

 the eminent men who have held the place Dr. Hagen now 

 refuses. 



It gives me pleasure to be able to state that Mr. F. W. 

 Putnam has returned to the Museum after an absence of 

 twelve years, and is now again in charge of the ichthyologi- 

 cal collection. 



For important volunteer work, I have to thank as usual 

 Messrs. Pourtales, Lyman, and Cary. 



The publications of the Museum have been continued with 

 more activity than usual. Five numbers of the Bulletin 

 (completing Vol. III.) have been published, four of which 

 contain partial results of the exploration of Lake Titicaca 

 made by myself and Mr. Garman, prepared by Messrs. 

 Garman, Derby, Pourtales, Allen, Faxon, and myself. One 

 number of the Bulletin, on the Development of Salpa, is by 

 Mr. Brooks, the work for it having been done in my labor- 

 atory at Newport. 



The scope of the quarto publications of the Museum having 

 been enlarged according to a recommendation of the Museum 

 Faculty, their title has been changed to Memoirs, the former 

 publications collected into volumes, and the fourth volume of 

 Memoirs concluded by an important paper by Mr. Allen on 

 the North American bisons, — twelve plates. This Memoir 

 has been published in connection with the geological survey 

 of Kentucky, the Museum supplying a number of the plates 

 accompanying the paper, the survey electrotyping the text, 

 and both parties profiting by this joint method of publication. 

 It is hoped that the Museum may hereafter continue with 

 other individuals or institutions this mode of issuing a part of 

 their publications. 



A shorter paper by Dr. Hagen, on Insect Deformities, 

 illustrated by a single plate, has also been published during 

 the past year. 



The Museum has also supplied materials to assist in prepar- 

 ing several publications issued in European scientific journals ; 



