6 
19. Genetics.—Three lectures on the problems of heredity, vari- 
ation, and environment, and their bearing on education; illustrated 
by demonstration material obtained from plant breeding experi- 
ments, and by lantern slides. Saturdays from 2:30-3:30, No- 
vember 6—November 20. Dr. White. 
20. Practical Garden Work.—A summer’s work with children 
in a garden under supervision. This work may be done at the 
Brooklyn Botanic Garden, or its equivalent in some children’s 
garden, the work of which is acceptable to the Botanic Garden. 
ADVANCED COURSES AND INVESTIGATION 
For the following advanced and research courses there is a 
charge covering all expenses, including laboratory fee, of $30 for 
a full course of 100 credit hours, and $20 for a half course of 50 
credit hours. 
Advanced Courses 
21. Mycology and Plant Pathology.—Morphology and path- 
ology of the fungi and bacteria. Life histories of fungi; methods 
of control of plant diseases, etc. Prerequisite, a satisfactory col- 
lege course in general botany. too credit hours of work. Of- 
fered in the spring of 1915. Hours to be arranged. 
Dr. Olive and Mr. Bisby. 
22. Fresh-Water Microbiology.—A course of lectures, recita- 
tions, and laboratory work on the various organisms found in 
drinking water. Odors, colors, etc., of drinking water; methods 
of microscopical and bacteriological examination. 50 credit hours 
of work. Offered in the fall of 1915, beginning in September. 
Hours to be arranged. Dr. Olive and Mr. Bisby. 
23. Cytology.—A course of lectures and laboratory work on cell 
physiology and cell morphology. Methods of cytological tech- 
nique, and practice in accurate interpretation of cell phenomena. 
Prerequisite, satisfactory college courses in general botany and 
plant physiology. 100 credit hours of work. Offered in the fall 
of 1915, beginning in September. Hours to be arranged. 
Dr. Olive and Mr. Bisby. 
