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illustrative of various plant groups and plant organs was furnished. 
A list of the kinds of material which are ordinarily sent out was 
given in my report for 1929. A new loan collection of lantern slides 
entitled “ Conservation of native plants,’ accompanied by a type- 
written text, was prepared and added to our series. The number 
of petri dishes filled with sterile agar continues to increase, 5,226 
dishes being sent to the schools. The figures for the distribution 
in former years are given in my report for 1929. As usual, Miss 
Rusk, who has been assisted by Miss Vilkomerson, has had entire 
charge of this part of the work which deals with high schools, 
colleges and universities, and institutions of similar rank. 
Adult Classes, New Courses, etc. 
In the new course entitled “The Story of Plant and Animal 
Evolution,” a series of four lectures given in March, I delivered the 
first lecture, entitled “ Water Plants and Water Animals,” Dr. 
Svenson the second, “ From Water to Land,” and Dr. Gundersen 
the last two: “ Early Land Life” and “ Modern Land Life.” Dr. 
Svenson and Miss Rusk took charge of the field course, “ Spring 
Flowers and Ferns of the New York Region,” which had been 
conducted in the past by Dr. Gundersen and Miss Rusk. In the 
spring, also, Dr. Svenson gave a new course of six exercises in 
“ Plant Geography.” Classes of student nurses from Prospect 
Heights Hospital and from Kings County Hospital came here for 
ten exercises in the spring and ten in the fall under my direction. 
The total registration for these classes (four in all) was 92. As 
usual, the medicinal plants growing in the plantations of the Gar- 
den were studied, and this field work was followed at each exercise 
by informal lectures in the laboratory, at which the structure and 
functions of plants and animals were compared. In the fall the 
course in General Botany (B1) for teachers was again offered, 
and Miss Rusk was given entire charge. The registration, 27, was 
the largest (with the exception of the year 1927, when there was 
a class of 30) that we have ever had for this rather technical 
course. Our plan was to offer this course in alternate years, but 
it is so difficult to present the subject matter of general botany 
— 
—" 
satisfactorily in 30 exercises that it may be advisable to lengthen it 
into a two year course. 
