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private citizen, with those of the public, is productive of all the good results 

 that may reasonabty be expected, it will probably be made at once an example 

 and incentive for uniting the energies of those interested in other branches of 

 science and art, in similar undertakings. 



In accepting these extensive and valuable collections on the conditions 

 specified, permit me to express, on behalf of the Park Commissioners, their 

 high appreciation of the enlightened sentiment that has provided so generously 

 for all interested in this department of science, and, at the same time, the hope 

 that tins auspicious beginning may, by the continued augmentation of similar 

 liberalities, become an unequalled treasury of science alike honorable to the 

 public spirit of the citizens by whom it has been inaugurated, and an indispen- 

 sable aid to those engaged in efforts to increase the knowledge of the science 

 that it is intended to illustrate. 



Very respectfully and truly, 



Andrew H. G-eeen, Comptroller of the Park. 



W. A. Haines, Esq., 



Chairman of the Executive Committee of the American Museum. 



