59 
been rather fully explained in my previous reports (e.g. Brooklyn 
Bot. Gard. Record 28: 55-56. 1939). 
Assistance and Cooperation of Institutions and Individuals. — 
Popular interest in this problem increases each year. The Garden 
Club of America and the Connecticut Forest and Park Association, 
to mention only two of many organizations and individuals, have 
been particularly helpful with arrangements for securing addi- 
tional land, on a cooperative basis. We acknowledge with pleas- 
ure the continued cooperation of the Division of Forest Pathology, 
S. Department of Agriculture, in sending us pollen and in 
giving us financial assistance for a part of the year. As already 
noted in our report of last year’s work, the American Association 
for the Advancement of Science awarded us a grant-in-aid to be 
applied to the work in 1939, 
On account of my absence in Europe during the flowering sea- 
— 
us de- 
partment, was given entire charge of the hybridization work. 
Summary of Hybridization Work in 1939—During the sum- 
mer, Miss Rusk, with the help of her assistants, made more than 
son of the chestnut, Miss Hester M. Rusk, Instructor in t 
60 different crosses on several hundred flowering branches of 
chestnut species, varieties, and hybrids. Resulting from this work, 
767 hybrid nuts were harvested in October. All these nuts were 
planted in our cold frames at the Garden, and at Hamden. Ten 
new crosses were successfully made, bringing the total of new 
hybrid combinations of Castanea produced by the Garden to 
30: 
Pollen of the Chestnut was received toward the end of June 
and in early July from the following institutions or persons, and 
we take eae in making acknowledgment here. 
June 18. From Division of Forest Pathology, U.S.D.A. Cas- 
tanea poe 
Jute wow Eront slays Noris. ‘lenn., thrush Mia) C. Me 
Daniel. C. Henin, 
une; sehrom evince. Wouise Naylor, hittle: “silver Nien ji Cc. 
[ibtat ona & (afi Mr. H. F. Stoke, Mountain Nut Co., Roanoke, 
Va. C. dentata. 
