200 
2. Exchange of seeds with other botanic gardens of this and 
and foreign countries. 
3. Bureau of information: 
a. Answering inquiries. 
b. Press releases to Associated Press. 
c. Advertising. 
4. Cooperation with national and international organizations, such 
as 
International Botanical Congress. 
International Congress of Soil Science. 
Botanical Society of America. 
Ecological Society of America. 
Editorial Board of Genetics. 
American Fern Society. 
American Iris Society. 
National Plant, Flower and Fruit Guild. 
Wild Flower Preservation Society, Ete. 
The organization of the educational work of the Garden is 
shown diagrammatically in the folded chart facing page 194. The 
public instruction personnel is indicated on the chart on page 
he nature and conduct of this work will be set forth in 
more detail in the following pages. 
SERVICE TO En bCrixe 
I> To THE SCHGoLS 
a. At the Botanic Garden (Cf. b, p. 212 
“ 
A 
1. Studying the Plantations 
The grounds of the Botanic Garden are so planned as to 
constitute an outdoor museum. It is this which chiefly dif- 
ferentiates a botanic garden from a park. In a park, the chief 
or only aim of the planting is to secure a pleasing landscape effect 
and to afford shade for persons who visit the park chiefly for 
recreation and rest—to escape from the noise and distractions of 
the city to the peace and quiet afforded by a bit of the country 
preserved in the midst of the city. 
In a botanic garden the primary aim of the planting is to impart 
— 
