Number 27 
Tree Pest Leaflets 
RESISTANCE of CHESTNUT to the BLIGHT 
(Endothia parasitica (Murr.) P. J. and H. W. And.) 
Prepared by ARTHUR HARMOUNT GRAVES, Curator, Brooklyn Botanic 
Garden, and Collaborator, Division of Forest Pathology, Bureau of Plant In- 
dustry, U. S. Dept. of Agriculture. 
Courtesy of Brooklyn Botanic Garden 
Fig. 1 — Part of a diseased branch of a Chestnut tree, showing typical pustules and form of 
spore discharge in damp weather. (Magnified 3 diameters). 
Issued jointly through cooperation of the following agencies: 
The State Foresters, State Departments of Agriculture, State Agricultural 
Experiment Stations, Extension Services, Forest Schools and Forest and Park 
Associations of New England and New York, and the Northeastern Forest 
Experiment Station, the Division of Forest Pathology, Bureau of Plant Industry 
and the Division of Forest Insect Investigations, Bureau of Entomology and 
Plant Quarantine of the United States Depervacnt of Agriculture. 
Edited by the Committee on Educational Leaflets of the New England Sec- 
tion, Society of American Foresters. 
Published for the Cooperators 
by the 
MASSACHUSETTS FOREST AND PARK ASSOCIATION 
3 Joy Street, Boston 
May 1938 
