257, 
EK. Conferences.—Conferences may be arranged by teachers 
and principals for the discussion of problems in connection with 
gardening and nature study. Appointments must be made in 
advance. Address the Curator of Elementary Instruction. 
F. Study and Loan Material.—To the extent of its facilities, 
the Garden will provide, on request, various algae and protozoa, 
as well as living plants, leaves and twigs, and other plant parts for 
study. When containers are necessary, as in the case of the 
algae and protozoa, they must be furnished by the school. In al! 
cases arrangements must be made by the teachers for calling for 
such material. It will greatly aid in the speed and efficiency of 
service if teachers will write or telephone a day in advance of 
sending for material. 
Tor the following, address, by mail or telephone (Prospect 9- 
6173), Miss Hester M. Rusk. 
le Aloae: 
Pleurococcus 
Spirogyra 
Vaucheria 
Desmids 
Blue-green algae: Oscillatoria and others. 
2. Types of fungi and lichens. 
3. Liverworts: Conocephalus and Lunularia. 
4, Moss plants: protonema, “ felt,” and capsules. 
Speers’ 
Prothallia: for these a covered Petri dish or tin box 
should be sent. 
Fronds with spores. 
6. Elodea or Nitella—to show movement of protoplasm. 
7. Corn or sorghum stems, dried. 
8. Twigs of maple, basswood, ailanthus, and others. 
9. Simple and compound leaves. 
10. Various seeds and fruits to illustrate methods of dispersal. 
11. Specimens loaned for exhibit: e.g., leguminous roots with 
tubercles, plant diseases, modified leaves, demonstrations of 
Mendelism. 
12, Protozoa: Paramoecium, Euglena, and others. 
13. Sterilized nutrient agar for the study of bacteria and molds. 
