THE LIBRARY. 
The Library is designed for reference purposes only. It con- 
tains many valuable scientific and technical works and is pri- 
marily for the use of the Curators and for those desiring to pur- 
sue special studies relating to the exhibits in the Museum. 
The collection of books and pamphlets on the shelves num- 
bers approximately 40,000. It includes: 
The Kunz collection of works on minerals, gems and semi- 
precious stones, and containing many rare tomes on these sub- 
jects, in Latin, dating back to the Fifteenth and Sixteenth 
centuries. 
The Skiff collection, containing many valuable books of ref- 
erence on minerals, mining, and metallurgy. (This collection 
has been placed in the Library of the Department of Geology, 
West Annex.) 
,The Edward E. Ayer Library of Ornithology, which con- 
tains a set of the original Audubon books and over three hun- 
dred rare and valuable reference works. 
There are valuable works on Anthropology and Botany in 
the Departmental Libraries. 
RULES OF THE LIBRARY. 
1. The Library is open daily, except Sunday, from 9:00 
A. M. to 4:30 p. M. It is entirely a library of reference. 
2. Books may be obtained by making application to the 
Librarian. 
3. Books or periodicals deposited in the Departmental 
Libraries will, in certain cases, upon application, be returned to 
the General Library for the use of an applicant. 
4. Current periodicals can be consulted in the Reading 
Room only. 
5. Curators may have accommodation transfers to their 
respective Departmental Libraries. 
6. Any defacement of books and all losses or injuries must 
be promptly adjusted to the satisfaction of the Librarian. 
In the Reading Room will be found the current magazines 
