416 
garden, as well as greenhouse work. Jee, $10. Thursdays, 4 
p.m., beginning October 13. Miss Shaw and Miss Dorward. 
B10. Flowering Plants: Field and Laboratory Study.— 
Thirty two-hour sessions on becoming acquainted with species of 
wild flowering plants, including weeds. (Not given in 1938-39.) 
Miss Rusk 
*B13-14. Trees and Shrubs of Greater New York.—Twenty 
two-hour sessions. A course of outdoor lessons in the parks and 
woodlands of Greater New York, the principal object being to 
rain a ready acquaintance with the common trees and shrubs of 
he eastern United States, which are wel 
le g 
= 
a 
represented in this re- 
gion, The species are considered in systematic order, in both 
winter and summer conditions, and the features pointed out by 
which they may most easily be recognized. Two credits. Fee, 
$10. Saturdays, 2:30 p.m., October 1 to December 3; and April 
15 to June 17, 1939. Dr. Graves and Miss Vilkomerson. 
B17. Genetics—— Thirty class meetings and fifteen two-hour 
laboratory periods throughout the year. An introductory course 
in heredity and variation, including discussion of Mendelian prin- 
ciples, the physical basis of heredity, sex linkage, factor linkage, 
factor interaction, and quantitative inheritance. Laboratory work 
on plant material and Drosophila. Prerequisite: an elementary 
course in botany. Tour credits. Fee, $10. Tuesdays, 4 p.m., 
beginning September 20; and Fridays, 4 p.m., beginning October 
Zi Miss Rusk. 
C. Children’s Courses 
More than thirty separate courses are given Saturday mornings 
for boys and girls from eight to nineteen years old in the spring, 
fall, and winter. 
The children are grouped according to age and experience. 
For example, under I (below), twelve separate courses are given; 
under II, four separate courses; under III, fourteen. Under IV, 
the Outdoor Garden, 200 children are working from late April to 
mid-September. This does not represent one course, but many 
courses combined under one heading, “ ‘The Outdoor Garden.” 
Miss Shaw and Assistants. 
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