233 
and presenting it at the desk. Before leaving the room the bor- 
rower shall return the book or periodical to the desk. 
4. Current periodicals shall be consulted only in the Reading 
Room, and will not be permitted to leave the Librai^, excepting 
at the instance of Directors or Curators for use in Working 
Libraries. 
5. Any book or periodical drawn from the General Library 
for Working Libraries, as provided under the Special Rules, will, 
upon application to the Librarian, be sent for and returned to the 
General Library for immediate reference purposes. 
6. A set of encyclopedias, dictionaries and other general 
works of reference will be permanently retained in the General 
Library. 
7. Any defacement of books is prohibited, and all losses or 
injuries shall be promptly adjusted to the satisfaction of the 
Librarian. 
8. These rules shall be posted in the Library, and shall be 
subject to change from time to time by the Library Committee 
HALL 34. 
THE READING ROOIT. 
Here will be found the reading tables, which will be supplied 
with magazines and periodicals pertaining more particularly to 
scientific, technical and kindred subjects. 
In this room are held meetings of the Council, consisting of 
the Director-in-Chief, and all of the Directors and Curators, who 
assemble regularlv to discuss the affairs of internal administration 
of the Museum. 
HALL 29. 
THE LECTURE HALL. 
This is reserved for all public meetings, lectures, etc., held in 
the Museum. It is the intention to establish, as soon as circum- 
stances warrant, courses of lectures on scientific and technical 
topics. 
Upon the wall of this room is an equestrian picture of Gen. 
John A. Logan, donated by the Veteran Club of Chicago. 
