94 



May 21. The relation of ejtvironment and heredity. Biology 

 Class, Manual Training High School, at the Brooklyn 

 Botanic Garden. 



June 29. Bolivian roads and trails. New York Botanical 

 Garden. 



December 3. Environment and heredity. Walden School. 



By the Curator of Plant Pathology : 



March 26. Story of Wheat. Boys* High School, Brooklyn. 



June I. Irises. Brooklyn Botanic Garden. 



Oct. 10. Studies on the inheritance of smut resistance in oats 

 and sorghums. Biological Seminary, Princeton Uni- 

 versity. 



Oct. 21. Some recent investigations concerning the cereal smuts. 

 Dept. of Botany, Brooklyn Institute of Arts and Sciences, 

 Brooklyn Botanic Garden. 



By the Research Fellow : 



April 30. Factors influencing infection in the covered smut of 

 barley. Torrey Botanical Club, Brooklyn Botanic (}arden. 



By the Curator of Public Instruction : 



February 4. The work of the Brooklyn Botanic Garden. 



Athena Club, Freeport High School. 

 February 20. IIoiv to answer the critics of evolution. Natural 



Science Club, Boys' High School. 

 February 20. Growth and cell-division. The Advanced Bi- 

 ology Club, Boys' High School. 

 March 6. Conservation. Bushwick High School Annex. 

 March 11. Diseases of trees. Institute for the Instruction of 



Tree Workers, Connecticut Agricultural Experiment 



Station, New Haven, Conn. 

 April 8. The civic value of trees. Torrey Botanical Club, 



American Museum of Natural History. 

 April 15. llie conservation of beauty. Tw^o assemblies, 



Girls' Commercial High School. 

 April 24. The Brooklyn Botanic Garden. Nature Club, 



Huntington, L. I. 



