45 
fullest public service, usually taken for granted but not stated nor 
talked about; the spirit of cooperation with other institutions and 
organizations and with the general public; the intangible, and 
therefore unrecorded, helpfulness of trustees and other friends. 
It is these things, more than anything else, that give an institution 
its character and without which none of its work can be most 
effective. They are the most precious assets in all aspects of 
human life. Whatever of success has attended the efforts of the 
m4 
srooklyn Botanic Garden personnel during the past twenty-five 
years 1s due in largest measure to these imponderables which have 
permeated its work. They afford the greatest helpfulness and 
encouragement to a director and staff; in them a board of trustees 
should find its most solic 
—4 
satisfaction. 
APPENDED REPORTS 
The Reports on Research for 1935, the departmental adminis- 
trative reports, and Appendices 1-12 follow as integral parts of 
the Annual Report. 
Respectfully submitted, 
Ce SRUART GAGE. 

REPORTS ON RESEARCH FOR 1935 
PLANT PATHOLOGY 
3y GEORGE M. REED 
Influence of the Growth of the Host on Smut Development 
Problems of fundamental interest are associated with the estab- 
lishment of the parasitic relation between the smut fungus and its 
host plant. Of special significance is the influence of various 
external factors on both host and parasite, which must be con- 
sidered from two distinct aspects. 
1. Influence of environal factors on the penetration of the para- 
site into the host plant. [ollowing the process of inoculation, 
there must be a penetration of the parasite into the host tissues. 
Usually the oat smut fungus enters in the early seedling stage. 

[extensive investigations have clearly established that such en- 
