216 
Inquiries should be directed to the Curator of Public Instrue- 
tion, preferably by letter. 
Determination of Specimens.—If the identification of plants 
is desired, the material submitted should include flowers, and fruit 
when obtainable. Identification of a single leaf 1s often impossible. 
For identification of plant diseases, representative portions of the 
part diseased should be sent. 
Ill, DOCENTRY 
To assist members and others in studying the collections the 
services of a docent may be obtained. Arrangements should be 
made by application to the Curator of Public Instruction one week 
in advance. No parties of less than six adults will be conducted. 
This service is free of charge to members; to others there is a 
charge of 50 cents per person. For information concerning mem- 
bership in the Botanic Garden see pages v-vii of this Prospectus. 
IV. COURSES OF INSTRUCTION 
Except courses A2Z3 and A29, each of the courses here an- 
nounced is a unit and not a series of unrelated lectures. Students 
must enroll for an entire course. With the exceptions noted, no 
registrations will be made for separate class exercises. 
Courses of instruction are offered in Botany, Horticulture, and 
Nature Study, and are divided into four classes: 
A. For members and the general public (** A” courses, p. 217) 
B. For teachers (“ B” courses, p. 221) 
Ce or coidren (°C. courses. i. 225) 
I). Other courses of a special nature (“ D” courses, p. 227) 
IX, Research courses (* If” courses, p. 227) 
No course will be given when less than ten persons apply for 
registration, Since registration in many of the courses is re- 
— 
stricted to a fixed number on account of the limited space avai 
able in the greenhouses, and for other reasons, those desiring to 
—— 
1€ 
entrance fee to the Secretary, Brooklyn Botanic Garden, several 
attend are urged to send in their application for enrollment and t 
days in advance of the first exercise. This avoids delay at the be- 
ginning of the first exercise, ensures a place in the course, and 
mer} 
enables the instructor to provide adequate material for the class. 
