(m) 



May 22. "Collecting Seaweeds in Tropical Waters," 

 by Dr. M. A. Howe. 



May 29. "Vanilla and Its Substitutes," by Dr. H. H. 



June 5. "The Selection and Care of Shade Trees," by 

 Dr. W. A. Murrill. 



June 12. "The Ice Age and Its Influence on the Vege- 

 tation of the World," by Dr. Arthur Hollick. 



June 19. "Haiti, the Negro Republic, as seen by a 

 Botanist," by Mr. G. V. Nash. 



June 26. "Some American Botanists of Former Days," 

 by Dr. J. H. Barnhart. 



July 3. "An Expedition up the Peribonca River, 

 Canada," by Dr. C. C. Curtis. 



July 10. "Collecting Experiences in the West Indies," 

 by Dr. N. L. Britton. 



Sept. 25. "Native Trees of the Hudson River Valley," 

 by Dr. N. L. Britton. 



Oct. 2. "Some Floral and Scenic Features of Porto 

 Rico," by Dr. M. A. Howe. 



Oct. 9. "The Flora of the Upper Delaware Valley," 

 by Mr. G. V. Nash. 



Oct. 16. "Collecting Fungi at Mountain Lake, Virginia," 

 by Dr. W. A. Murrill. 



Oct. 23. "Autumnal Wild Flowers," by Dr. N. L. 

 Britton. 



Oct. 30. "Some Plant Diseases : Their Cause and Treat- 

 ment," by Mr. F. J. Seaver. 



Nov. 6. "The Reclamation of the Desert in San Ber- 

 nardino Valley, California," by Dr. H. H. Rusby. 



Nov. 13. "The Hudson River Valley before the Advent 

 of Man," by Dr. Arthur Hollick. 



School Lectures 

 The usual series of lectures and demonstrations to the 

 public school children of the 4B and 5B grades, of the Bor- 

 ough of the Bronx, was given in spring and autumn, under 



