March J. Alpine and rock (/aniens. Summit Garden Ex- 

 change, Summit, N. J. 

 April 26. Trees and shrubs. Station WPCH, New York, 



N. Y. 

 May 5. Flower and vegetable seeds. Station WPCH, New 



York, N. Y. 

 May T2. Evergreens. Station WPCH, New York, N. Y. 

 May 19. Rock gardens. Federated Garden Clubs of New 



York, Brooklyn Botanic Garden. 

 May 22. Rock gardens. Public lecture, Brooklyn Botanic 



Garden. 

 July 23. Rock gardens. New York Botanical Garden, New 



" York. 

 August 30. Rock gardens. East Hampton Garden Club, East 



Hampton, L. I. 

 September 29. Rock gardens. Staten Island Garden Club, 



Staten Island, N. Y. 

 November 8. Rock gardens. American Horticultural Society, 



National Museum, Washington, D. C. 

 December 7. Rock gardens. East Orange Garden Club, East 



Orange, N. J. 

 By the Resident Investigator : 



January 24. Some new and old biology. Congregational 



Church, Rockville Centre, New York. 

 October 13. Ferns. Department of Botany, Brooklyn Insti- 

 tute, Brooklyn, N. Y. 

 November 19. Ferns as house plants. New York Botanical 



Garden, New York. 

 By the Registrar and Custodian: 



January 11. Value of nature study and how it may be taught. 



Cathedral College, Brooklyn, N. Y. 

 March T2. Nature's gardens. Northeastern Field Conference, 



Woodcraft League, Pennsylvania Hotel, New York. 

 April 9. Nature's gardens. Woodcraft League. Brooklyn 



Botanic Garden. 

 April 25. Nature's gardens. Scout Leaders' Training Course, 



Mineola, N. Y. 



