8 
in water, sewage, etc. Saturdays, at 11:00, February a ak 
24. r. Olive. 
Co. Heredity and Environment.—Five lectures, planned espe- 
cially for teachers, preachers, and social workers. Special em- 
phasis will be laid upon the part played by heredity and environ- 
ment in the formation of human character, both physical and 
mental. Illustrations of fundamental truths, applicable to class- 
room and social problems, presented in the form of charts, dia- 
grams, lantern slides, and demonstration material from breeding 
experiments. Persons who contemplate taking this course should 
first consult with Dr. O. E. White, either personally or by mail. 
Saturdays, at 10 a. m., November 3—December 1. Dr, White. 
N.B. Courses Cr—Co inclusive, are open free to the public un- 
less otherwise specified. Those planning to take any of these 
courses are asked to register at the Garden at least one week 
before the course opens, so that adequate arrangements may be 
made for materials, ete. They are open to both men and women, 
but no course will be given to a class of less than six. 
D. ADVANCED CouRSES AND INVESTIGATION 
For the following advanced and research courses there is a 
charge covering all expenses, including laboratory fee, of $30 for 
each full course of 100 credit hours, and $20 for each half course 
of 50 credit hours. 
Advanced Courses 
Di. Mycology and Plant Pathology —Morphology and pathol- 
ogy 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. 100 credit hours of work. Hours 
to be arranged. Dr. Olive and assistant. 
D2. 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. Hours to be arranged. Dr. Olive and assistant 
