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Students and Scholars 
During the year the following persons were formally 
registered for research at the Garden or were utilizing 
facilities of the Garden in connection with studies for de- 
grees at Columbia University. 
Findlay, Hugh, Genetics. Fertility, sterility and heredity in 4bution. 
Gershoy, Alexander, Taxonomy. 
Hamanaka, Koshin, Genetics. 
Hastings, George Tracy, Ecology. 
Lebau, Harry, Mycorrhiza of Orthide 
Nishimura, Makoto, Algae. 
Raines, M. A., Pathology. 
Smith, Edna ane, Taxonomy. 
Thomas, Harry Earl, Pathology and genetics. 
The degree of Ph.D. in botany was granted at Columbia 
University during the year to Harvey E. Thomas, Frederick 
. Rand, and Makato Nishimura, whose researches were 
in part prosecuted at the Garden. 
Of botanists who have spent some time in resident re- 
search at the Garden mention should be made of Professor 
William A. Setchell, Professor Forman T. McLean, and 
Professor William C. Coker. Numerous persons have 
utilized the facilities of laboratories, herbaria, and library 
as visiting investigators for short periods a time, and 
note of these has in many cases been made in the Garden 
Journal. 
Respectfully submitted, 
B. Srout, 
Director of the Laboratories. 
REPORT OF THE SUPERINTENDENT OF BUILDINGS AND GROUNDS 
Dr. N. L. Brirron, Direcror-1n-CHIEF. 
Sir: I have the honor to submit the following report 
for the year 1920. 
Regulating and Grading 
Most of this work was accomplished in the horticultural 
gardens, in which about an acre of ground was graded for 
