237 



agar is desired. In all cases arrangements must he made by the 

 teachers for calling for such material. Address, hy mail or tele- 

 phone, I\liss Hester ]\1. Rusk. 



]\Iaterial u.sually availabl]': 



1. Protozoa: Paramoecium and others. 



2. l^leurococcus. 



3. Spirogyra. 



4. Vaucheria. 



5. Blue-green algae : Oscillatoria and others. 



6. Moss plants : gametophytc and sporophyte, with capsules. 



7. Liverworts : Conocephalum and Lunularia. 



8. Fern prothallia. For these, a Petri dish with a cover is the 



best container to bring, since the prothallia dry out quickly. 



9. Fern si^orophylls (with sori). 



10. Geranium, Coleus and l^radescantia — variegated green and 



white, loaned for photosynthesis experiment. 



11. Cacti, pitcher plant, Selaginella and others — loaned for dem- 



onstration. 



12. Elodea — to show movement of ]:)rotoplasm. 



13. \'arious collections loaned for exhibit: c.a., lichens, fungi, 



plant diseases, fruits, modified leaves, demonstrations of 

 Mendel's law. 



F. Demonstration Experiments. — Teachers ma}' arrange to 

 have various physiological ex])eriments or demonstrations con- 

 ducted at the Garden for the benefit of their classes. Communica- 

 tions in regard to these matters should l)e addressed to the Curator 

 of Piihlic Instrtiction. 



G. Loan Sets of Lantern Slides. — Sets of lantern slides have 

 been prepared for loan to the schools. Each set is accompanied 

 by a short syllabus of ex])lanatory nature. In all cases these sets 

 must be called for by a s])ccial messenger and returned promptly 

 in good condition. The subjects now available are as follows. 

 Other sets are in prei)aration. 



1. Plant Life 



2. .Sjiring \\"\\d Flowers 



3. Common Trees 



