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By the Curator of Plant Pathology: 
March 20. Cereal Food Production. The New York City 
Biology Teachers’ Association, Washington Irving High 
School. 
By the Curator of Plant Breeding and Economic Plants: 
March 24. Economic plants of the tropics. Public School 
Teachers. At the Garden. 
March 28. Economic plants of the tropics. Graduate Class in 
Biology, Teachers’ College. At the Garden. 
April 5. Adventures of a plant hunter in the South American 
tropics. Graduate Club, Teachers’ College, Columbia 
University. 
April 9. Economic plants of South America. Senior Biology 
Class, Miss Beard’s School, East Orange, N. J. At the 
Garden. 
June 5. Plant breeding and heredity. Biology Class, Manual 
Training High School. At the Garden. 
October 15. The ways of plants. Biology Class, Girls’ Com- 
mercial High School. At the Garden. 
October 16. Plant relations. Biology Class, Girls’ Com- 
mercial High School. At the Garden. 
October 27. Economic plants of South America. Maxwell 
Training School for Teachers, Brooklyn. 
October 27. What foods we owe to South America. Geography 
Class, Maxwell Training School for Teachers, Brooklyn. 
November 20. Bokvian wilderness and city. Public lecture, 
Burr and Burton Seminary, Manchester, Vermont. 
December 21. Economic plants of the tropics. Biology Class, 
Hunter College. At the Garden. 
December 22. Economic plants, especially of South America. 
Biology Class, Hunter College. At the Garden. 
By the Resident Investigator: 
April 14. Conservation of beauty. Science Club, Hunter 
College, New York. 
April 15. Bzology and religion. Flatbush Congregational 
Church, Brooklyn, N. Y. 
