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9. October 21.— Four Seasons in the Garden. Mr. Leonard 

 Barron, Editor of the Garden Magazine, Garden City, L. I. 



10. October 28.— Health and Disease in Plants. Dr. Arthur 

 Harmount Graves, Curator of Public Instruction, Brooklyn Bo- 

 tanic Garden. 



The attendance, while not large, was satisfactory, and should 

 increase from year to year as wider publicity is given to this feature. 



Loan Lectures 



Sets of lantern slides illustrating Plant Life, Spring Wild Flow- 

 ers, and Common Trees were lent to 42 teachers during the past 

 year. We are considerably handicapped in this work on account 

 of lack of means for delivery and return of these lectures. This, 

 and other phases of our cooperation with schools, would be facili- 

 tated and could be greatly extended if a small automobile were 

 available. Such a car would also be a great saver of time and 

 energy in connection with the many trips made by members of staff 

 to give addresses at schools, and for delivering study material to 

 schools. 



Class Material for Schools 



During 1922, 48 requests were received from the different 

 schools for agar for the study of bacteria and molds, for Spirogyra, 

 Elodea, fern prothallia, not to mention a much larger number re- 

 ceived by the Department of Elementary Instruction for fruits, 

 leaves, plants, etc. In 1921 there were only 27 requests for such 

 material, so that the demand this year has nearly doubled. Three 

 hundred and fifty petri dishes containing agar, .57 test-tube agar 

 slants, and 16 flasks of agar were distributed. 



Scout Work, Etc. 



Mr. Stoll, during vacation and holidays, visited numerous groups 

 and camps of Boy Scouts, Y. M. C. A., and similar organizations 

 for the purpose of giving instruction and examinations ; in this way 

 reaching a total of 4,630 young people. The entire month of July 

 was devoted to this work among the eighteen Boy Scout Camps on 

 Kanohwahke Lakes on Bear Mountain, near Tuxedo, N. Y., 



