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Library 
The rapidly growing library of the Garden comprises at present 
over 14,000 volumes and over 10,000 pamphlets. This is not a cir- 
culating library, but is open free for consultation to all persons 
daily (except Sundays and holidays) from 9 a.m. until 5 p.m. 
(Saturdays, 9 to 12). Over goo periodicals and serial publica- 
tions devoted to botany and closely related subjects are regularly 
received. These include the transactions of scientific societies 
from all quarters of the globe, the bulletins, monographs, reports 
and other publications of various departments of the United States 
Government, as well as those of foreign governments; of all state 
agricultural experiment stations and agricultural colleges; the pub- 
lications of research laboratories, universities, botanic gardens and 
other scientific institutions of the world, as well as the files of inde- 
pendent journals devoted to the various phases of plant life. The 
library is especially rich in publications of foreign countries and 
has a growing collection of incunabula and other pre-Linnean 
works, 
Bibliographical assistance is rendered to readers by members of 
the Library staff. 
Laboratory Building 
The Laboratory Building contains (besides offices of administra- 
tion and the Library and Herbarium mentioned above) four lab- 
oratory rooms, a culture room, three classrooms with stereopticon 
and other equipment for instruction, a room for the installation of 
temporary exhibits, six private research rooms, and an auditorium 
seating about 570 and equipped with motion picture machine, 
stereopticon and lecture table supplied with water, gas, and elec- 
tric current for lectures involving experimental work. 
Instructional Greenhouses 
A range of three greenhouses, each about 20x30 feet, is pro- 
vided for the practical instruction of children and adults in plant 
propagation and other subjects. 
Children’s Room 
A gift of $1,500 in 1921 from Mrs. Helen Sherman Pratt, 
supplemented in 1923 by a further gift of $500 from Mr. George 
D. Pratt, has made it possible to provide a beautifully decorated 
