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K. Study and Loan Material.—To the extent of its facilities, 
the Botanic Garden will provide, on request, various plants and 
plant parts for study (also certain protozoa and sterilized nutrient 
agar.) When containers are necessary, as in the case of algae and 
protozoa, they must be furnished by the school. 
Hitherto the Garden has performed this service gratis, but both 
on account of the increasing demand and because of the decrease 
In appropriations, it has become necessary to make a small charge 
for the material supplied or loaned. This charge will be made 
only for material furnished to junior high schools, high schools, 
and colleges. Material will continue to be supplied to elementary 
schools gratis as in the past. A price list of the various materials 
furnished will be mailed on request. 
Requests for material should be made by mail or telephone 
(Prospect 9-6173) at least a day in advance: those from high 
schools, junior high schools, and colleges to Miss Hester M. Rusk: 
those from elementary schools to Miss Margaret M. Dorward. 
Ilementary school material should be called for at the Informa- 
tion Booth on the ground floor ; high school and college material at 
Room 325. 
MATERIAL USuALLY AVAILABLE 
Lea leae: 
Pleurococcus 
Spirogyra 
Vaucheria 
Desmids 
Blue-green algae: Oscillatoria and others. 
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Forms of fungi and lichens. 
Plus and minus strains of bread mold. 
Smut of oats or wheat. 
Black stem rust of wheat. 
3. Liverworts: Conocephalum and Lunularia. 
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Moss plants: protonema, “ felt, 
Ferns: 
and capsules. 
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Prothallia: for these a covered Petri dish or tin box should 
be sent. 
Fronds with spores. 
