265 
4- Current periodicals may be consulted only in the Reading 
Room and are not to be taken from the room. 
5. Any book or periodical drawn from the General Library 
for Departmental Libraries, and required for immediate reference, 
will be sent for upon application to the Librarian, and tem- 
porarily returned to the General Library. 
6. A set of encyclopedias, dictionaries and other general 
works of reference will be permanently retained in the General 
Library. 
In the Reading Room will be found the reading tables, which 
are supplied with current magazines and periodicals pertaining 
more particularly to scientific, technical and kindred subjects. 
HALL 34. 
LECTURE HALL. 
This is reserved for all public meetings, lectures, etc., held in 
the Museum. Courses of lectures on scientific and technical sub- 
jects are here given on Saturday afternoons of March and April, 
and October and November by specialists acquainted with the 
results of the latest research. The lectures are usually illus- 
trated with stereopticon views. 
Five lecture courses have thus far been given. The follow- 
ing lectures were delivered in the last course: 
Fifth Lecture Course. 
March 7 — “ The History of Coins.” 
Mr. Sigmund Krausz, Chicago. 
“ 14 — “ Mining in the Middle Ages.” 
Mr. H. W. Nichols, 
Curator of Economic Geology, Field Columbian 
Museum. 
“ 21 — “ How Plants Travel.” 
Dr. C. F. Millspaugh, 
Curator of Botany, Field Columbian Museum. 
