(335) 
representing plants of Carboniferous, Tertiary, and Qua- 
ternary periods, and twenty-two volumes and pamphlets 
were added to the paleobotanical library. 
The examination of unnamed material was continued 
and all specimens identified were properly labeled. 
While in Washington, during May, on request of the 
Director-in-chief, it was my privilege to represent the 
Garden at the eleventh annual meeting of the American 
Association of Museums 
Respectfully submitted, 
Artuur Hot tick, 
Honorary Curator of the Collection of Fossil Plants. 
REPORT OF THE DIRECTOR OF THE LABORATORIES 
Dr. N. L. Brirron, Director-1n-CuIiEr. 
Sir: I have the honor to submit the following report for 
the year 1916. 
General Matters 
There have been no changes during the year in the general 
arrangement of the laboratories and only rather few and 
minor additions to the equipment. Throughout most of 
the year the laboratory facilities were fully in use, and at 
times the supply of microscopes was not equal to the needs. 
The facilities of the experimental plots and propagating 
greenhouses were fully utilized in connection with experi- 
mental studies in genetics and pathology carried on by 
members of the botanical department of Columbia Uni- 
versity, by students of the Garden, and by myself. 
Meteorological records have been taken as in previous 
years. As secretary of the monthly conferences of the 
staff and students of the Garden, I have arranged the 
programs and prepared the reports of such conferences 
which have been published in the Journal. I also con- 
tinued as editor of the Journal until the August issue. 
