201 
Field Excursions.—\V hen courses of instruction involve field 
excursions, these excursions are open only to those who have en- 
rolled for the entire course. 
Enrollment.—Persons are requested not to register in any 
course unless they are reasonably confident that they can attend 
the sessions of the class regularly and throughout. This is espe- 
cially important where the number to be enrolled is limited. To 
register and not attend will quite certainly deprive someone else 
of the privilege of attending. 
Equipment available for the courses: 
1. Three Classrooms (in addition to the Boys’ and Girls’ Club 
Room in the Laboratory Building), equipped with stereoscopes 
and views, a stereopticon, plant collections, economic exhibits, 
models, and other apparatus and materials for instruction. 
2. ‘Two Laboratory Rooms, with the usual equipment for plant 
study. 
3. Three Instructional Greenhouses, for the use of juvenile as 
well as adult classes, for instruction in plant propagation and re- 
lated subjects. 
4. The Children’s Garden, on a piece of land about three-quarters 
of an acre in extent, in the southeast part of the Botanic Garden, 
divided into about 150 plots which are used throughout the season 
for practical individual instruction in gardening. 
5. The Children’s Building, near the north end of this plot, con- 
taining rooms for conferences and for the storage of tools, seeds, 
notebooks, special collections, ete. 
6. The Auditorium, on the ground floor, capable of seating 570 
persons, and equipped with a motion-picture machine and _ stere- 
opticon, and electric current, gas, and running water for experi- 
ments connected with lectures. 
In addition to these accommodations, the dried plant specimens 
in the herbarium, the living plants in the conservatories and planta- 
tions, and the various types of gardens, are readily accessible ; while 
the main library and children’s library, which contain a comprehen- 
< 
sive collection of books on every phase of gardening and plant life, 
may be consulted freely at any time. See also pages 214-222, 
A. Courses for Members and the General Public 
Although the following courses are designed especially for 
Members of the Botanic Garden, they are open (unless otherwise 
