368 
necessary, as in the case of agar, algae, and protozoa, they must 
be furnished by the school. 
In the past, the Garden has offered 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. 
A Price List of the various 
materials furnished will be mailed on request. 
Requests should be made by mail or telephone (PRospect 
9-6173), at least one day in advance, to Dr. Elizabeth Marcy, anc 
the material should be called for at Room 204. 
oar 
All exhibit ma- 
terial, and other items starred (*) will be mailed if the schools pay 
postage. 
LIVING MATERIAL—PLANTS 
Algae: 1. Spirogyra, *Pleurococcus, Oedogonium, Vaucheria, Hy- 
drodictyon, Desmids, Oscillatoria, Scenedesmus. 
conjugating—preserved material. 
Bacteria: 3. *Slant cultures of Azotobacter, B. coli, B. subtilis, 
Pseudomonas radicicola, Sarcina flava, Serratia marcesans, 
Chromobactertum violaceum. 
2. *Spirogyra 
Fungi: Plus and minus strains of bread mold (Rhizopus nigri- 
cans). 4. *Spores for inoculation. 5. Cultures of 
— 
ach strain. 
(Molds should be grown on potato dextrose agar.) 6. Petri 
dish inoculated with both strains showing lines of zygospores. 
Liverworts: 
Thallus only—7. Marchantia. 8. Conocephalum. 
Vhallus with gemmae cups—9. Marchantia. 
Mosses: 11. Protonema. 12. Felt. 
Fern Allies: 14. Selaginella plants. 
Ferns: 15. Prothallia. 
10. Lunularia. 
13. Felt with capsules. 
16. Small ferns showing rhizome and roots. 
17. Fern fronds with spores—various species. 
Gymnosperms: 18. * Pine seeds. 19. *Cones, 
ing need 
20. Twigs show- 
poe 
e arrangement—various evergreens. 
Angiosper US. 
Plants: For photosynthesis experiments; 21. Coleus. 
22. Tradescantia. Geranium, 23. green, 24. silver. 
With fleshy leaves: 25. Bryophyllum. 26. Sedum. 
Insectivorous: 27. Sundew. 
