principals for the discussion of problems in connection with gar- 

 dening and nature-study. The first Monday afternoon of each 

 month will be reserved for such conferences : appointments must 

 be made in advance. Address Miss Ellen Eddy Shaw. 



F. Study and Loan Material. — On request, the Garden will en- 

 deavor to provide living seedlings or plant parts for study, to the 

 extent of its facilities. Teachers may arrange to have various 

 physiological experiments or demonstrations conducted at the Gar- 

 den. Petri dishes, which must be cleaned and delivered to the 

 Garden, will, on request, be filled with nutrient agar, ready for 

 exposure in the study of bacteria and molds. In all cases arrange- 

 ments must be made by teachers for calling for such material, and 

 all material loaned by the Garden must be returned promptly in 

 good condition. 



During the fall and spring the Botanic Garden will be able to 

 arrange for a limited number of loan exhibits to public schools of 

 living and herbarium material of spring wild flowers and weeds 

 and of fall wild flowers and weeds. Applications should be sent 

 to the Curator of Elementary Instruction one week before the 

 exhibit is desired. Three sets of lantern slides have been pre- 

 pared for loan on the following subjects: 



i. Plant Life 



2. Spring Wild Flowers 



3. Common Trees 



II. PUBLIC LECTURES 



Spring Lectures 



Fridays at 4: April 6-27 



1. April 6. Evolution. C. Stuart Gager, Director, Brooklyn 

 Botanic Garden. 



2. April 13. Trees in Nature and Art. A. F. Blakeslee, Resi- 

 dent Investigator in Plant Genetics, Station for Experimental Evo- 

 lution, Cold Spring Harbor, L. I. 



3. April 20. Forestry in the United States. Henry Solon 

 Graves, Dean, School of Forestry, Yale University. 



