205 
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. 
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 20 x 30 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 
room for the use of the Boys’ and Girls’ Club. Any boy or girl 
who is enrolled, or has been enrolled, in any of the children’s 
classes at the Garden is eligible for membership in this club, which 
now numbers about 1,000 active members. The room contains 
shelves for a nature-study library, of which a nucleus has already 
been secured, and is equipped with stereoscopic views, photographs, 
and preserved and living specimens of plant life, for the instruction 
and entertainment of boys and girls. The room is open free to all 
children. Contributions of specimens and of books on nature 
study and closely related subjects will be most welcome. 
