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December 19. ‘* The Relation of Magnesium to Plant 
Growth,” by Miss Gertrude Burlingham. 
The Torrey Botanical Club has held six regular meetings 
during the year in the Laboratory of the Garden. The 
special meeting of May 23 in commemoration of the tenth 
anniversary of the commencement of work in the develop- 
ment of the Garden took place in the large lecture hall. 
A field meeting of the Bronx Society of Arts and Sciences 
was held at the Garden July 21. The native tree flora found 
within the limits of the Garden, consisting of nearly fifty 
species, was examined and discussed at that time. This 
Society also held a regular meeting in the lecture hall of the 
Garden on the evening of October 18. 
The Horticultural Society of New York held its annual 
meeting and exhibition in the Museum on May g and 10; its 
summer exhibition on June 13 and 14; and its autumn exhi- 
bition on October 12. 
The American Association of Museums, a society organ- 
ized during the past year, met at the Garden on May ro, 
holding both morning and afternoon sessions. 
The Botanical Society of America met at the Garden on 
December 29. 
Respectfully submitted, 
W. A. Murri.uz, 
first Assistant. 
