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OFFICES 4 LA BO|R ATOPIES 

 OF THE 

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1. Elevators 



2. Office of the Director. 



FIFTH FLOOR 



The fifth floor is given over to the administrative offices, the offices 

 and laboratories of the scientific departments and the library which con- 

 tains some 70,000 volumes on natural history, anthropology and travel. 



The library now contains over 15,000 volumes on zoology, com- 

 prising many of the extremely rare and interesting monographs in 

 ornithology; an excellent collection of 3,500 volumes in entomology, 

 including many of the rare classics, and a 2,000 volume collection in 

 conchology containing the standard works of Kiister, Reeve and Binney. 

 There is also a well selected collection of 2,500 volumes in anthropology, 

 including many of the older works relating to the North American 

 Indian; an excellent collection of 3,500 volumes in geology enriched by 

 the library of the late Professor Jules Marcou; a collection of 5,000 

 volumes in palaeontology, to a large extent composed of the Osborn 

 Library of Vertebrate Palaeontology; also an unusually complete collec- 

 tion of more than 25,000 volumes of natural science periodicals. 



The reading room of the library is located in the west corridor and, 

 with the exception of Sundays and holidays, is open free daily, from 9 

 A. M. to 5 P. M., to all who may wish to consult the l)ooks. Besides the 

 current issues of the more important periodicals, it contains the more 

 general works of reference, while other volumes will, upon application 

 to the librarian, be furnished to those who wish to consult them. 



On this floor, too, are the workrooms of the Department of Vertebrate 

 Palaeontology, where the skeletons of fossil animals are prepared and 

 mounted, and the laboratory where are made the beautiful models of 

 invertebrates. 



These, like the other laboratories, are of necessity not open to the 

 public. 



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