199 
26. Geranium, Coleus, Tradescantia—variegated green and white, 
for photosynthesis experiment. 
Sterilized Agar 
27. Petri dishes sent in clean and dry ten days in advance, or test 
tubes or flasks sent in one week in advance, will be filled 
with sterilized nutrient agar for the study of bacteria and 
molds. 
G. Demonstration Experiments.—Teachers may arrange to 
have various physiological experiments or demonstrations con- 
ducted at the Garden for the benefit of their classes. Communica- 
tions in regard to these matters should be addressed to the Curator 
of Public Instruction. 
H. Loan Sets of Lantern Slides—Sets of lantern slides have 
“ach set is accompanied 
been prepared for loan to the schools. 
by a short lecture text of explanatory nature. In all cases these 
sets must be called for by a responsible school messenger and re- 
turned promptly in good condition. Address, by mail or telephone, 
Mr. Frank Stoll. The subjects now available are as follows. 
Other sets are in preparation. 
I Planteleite 4. Fall Wild Flowers 
2. Spring Wild Flowers 5. Forestry 
3. Common ‘Trees 6. Conservation of Native Plants 
II. BUREAU OF PUBLIC INFORMATION 
Consultation and advice, and the facilities of the library and 
herbarium are freely at the service of members * of the Botanic 
Garden and (to a limited extent) of others with special problems 
relating to plants or plant products, especially in the following 
— 
subjects : 
1. Plant diseases and determination (naming) of fungi. 
2. Plant geography and ecology. 
3. Determination of flowering plants. 
4. The growing of cultivated plants and their arrangement; also 
their adaptation to soils, climate, and other factors. 
5. The care of trees, shrubs, and lawns, and general gardening 
— 
problems. 
* For information about membership consult pages v—vii of this PRrospEc- 
TUS 
