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Exploration and Collecting 
The necessity of applying all available funds to mainte- 
nance has restricted exploration work to near limits. The 
following contributions to the Emergency fund were cred- 
ited to exploration: 
Mr. Edward V. Z. Lane... 2. cece eee cece eee eee $100 
Me: Charles. Fi Randi ié2 0 seine eee eee ontrack ate 100 
Mr ar Lj. Matstone)... sansa bee foe e ede os ee ekiees 100 
Mr. Adolph Lewisohn. ..... 0.0... e eee e ere e eee eens 50 
Through the cooperative arrangement entered into in 
1917 with the Smithsonian Institution and the Gray 
Herbarium of Harvard University, for exploration and 
investigation of the flora of northern South America, Pro- 
fessor A. S. Hitchcock, Agrostologist of the United States 
Bureau of Plant Industry, was commissioned during the 
summer to explore portions of British Guiana for a period 
of about six months. He reports extensive collections al- 
ready made, which will doubtless add much to our know- 
ledge of tropical American vegetation and its products. 
The study and organization of collections made in Colom- 
bia, Venezuela and Ecuador under this arrangement has 
progressed to such extent as the available time of members 
of the staff of the three cooperating institutions has per- 
mitted; in order to proceed more rapidly, additional 
investigators and collectors are needed. 
Through the continued valued patronage of Mr. Charles 
Deering, botanical exploration of southern Florida was 
continued during the year by Dr. John K. Small, Head 
Curator, who visited that region during parts of April and 
May, and again in December, and made large collections 
of specimens and of living plants. Mrs. Britton and I 
accompanied Dr. Small in December and took part in the 
work, which enabled us to restudy the vegetation of Florida 
in relation to that of the Bahamas, Cuba and Porto Rico. 
For additional facilities in this investigation, we are grateful 
to Mr. William J. Matheson, of the Garden Board of 
Managers, and to his son, Mr. Hugh M. Matheson. We 
