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1878. 



The Trustees of the American Museum of Natural 

 History have the pleasure of presenting this, their Tenth 

 Annual Report, to the Patrons, Fellows and Members of 

 the Museum. 



During the past year marked progress has been made 

 in the more exact scientific classification of our own 

 collections, and in receiving on deposit, and thus render- 

 ing available to the scientific men of our country, sev- 

 eral collections which have been the subject of elaborate 

 examination, and have, therefore, become standards of 

 comparison for all subsequent investigation. 



To farther aid the student in his original researches, 

 we have received on deposit the several special Libraries 

 of great value subsequently mentioned, and the large 

 general Library of the New York Academy of Sciences. 



The Treasurer's Annual Report is annexed, showing 

 that the Trustees, including a small sum from other citi- 

 zens, have contributed $17,650, mostly for payment on 

 account of the Hall collection of fossils, and from the 

 city the sum of $12,500 has been received, to partly de- 

 fray the necessary maintenance. 



The cases in the lower hall have been perfected by 

 the addition of shelves, and the whole collection of 

 mammals scientifically arranged. Several members of 

 the Board of Trustees have purchased and presented 

 the mounted mammals exhibited by Prof. H. A. Ward 

 at the Centennial Exhibition at Philadelphia, consist- 



