254 
Library 
The rapidly growing library of the Garden comprises at present 
more than 18,600 volumes and about 15,000 pamphlets. This is 
not a circulating library, but is open free for consultation to all 
persons daily (except Sundays and holidays) from 9 a.m. until 
9 p.m. (Saturdays, 9 to 12). Nearly 1,000 periodica 
publications devoted to botany and closely related subjects are 
— 
s and serial 
regularly received. These include the transactions of scientific 
societies from all quarters of the globe; the bulletins, monographs, 
the 
a 
reports, and other publications of various departments o 
United States Government, as well as those of foreign govern- 
ments, and of all state agricultural experiment stations and agricul- 
tural colleges; the publications of research laboratories, universi- 
ties, botanic gardens, and other scientific institutions of the world, 
as well as the files of independent journals devoted to the various 
phases of plant life. The library is specially rich in publications 
of foreign countries and has a growing collection of incunabula 
and other pre-Linnean works. 
Bibhographical assistance is rendered to readers by members of 
the Library staff. 
An annotated list of the incunabula, pre-Linnaean works, old 
herbals and other rare or historically important books in the Li- 
brary was published as the July, 1935, number of the Botanic 
jean 
Garden KrEcorb, Copies are for sale at 40 cents each. 
Laboratory Building 
The Laboratory Building contains (besides offices of adminis- 
tration and the Library and Herbarium mentioned above) four 
laboratory rooms, a culture room, three classrooms with stere- 
opticon and other equipment for instruction, a room for the in- 
stallation of temporary exhibits, six private researc 
— 
1 rooms, and 
an auditorium seating about 570 and equipped with motion picture 
machine, stereopticon, and lecture table supplied with water, gas, 
and electric current for lectures involving experimental work. 
Instructional Greenhouses 
A range of three greenhouses, each about 20 x 30 feet. is pro- 
vided for the practical instruction of children and adults in plant 
propagation and other subjects. 
