66 
Hamden (Connecticut) Hybrids 
(Using various combinations ) 
(3)* 5 Smith hybrid (1931) (Jap. X Amer., ie. crenata X dentata 
yrs.) crossed with Smith hybrids (of similar history ) 
(4) 1 Smith hybrid (1931) crossed with American chestnut (CC. den- 
fata trom U.S. D. A. and North Haven, Conn.) 
(5)* 3 Smith hybrid 1931 crossed with Chinese chestnut (C. mollissima, 
(6)** 7 Chinese chestnut (C. mollissima, 9 yrs.) crossed with Smith 
hybrid 
(7) 13 Chinese aes (C. mollissima 7 yrs.) crossed with American 
chestnut (U.S. D. A. and North Haven, Conn.) 
(8) 12 Chinese rae t ae mollisstima var. Mammoth, 7 yrs.) crossed 
with American oan (C. dentata) (U. S. D. A. and North 
Haven, Conn.) 
(9) 25 Chinese-chinquapin hybrid (C. bre x C. pumila, 7 yrs.) 
crossed with American chestnut (U. D. A. and North Haven, 
- 
Conn. ) 
(10) 10 Japanese Forest Type (C. crenata var., 7 yrs.) crossed with 
American chestnut (U.S. D. A. and orth Haven, Conn.) 
(11)* 1 Japanese (C. crenata, 4 yrs.) crossed with ae hybrid 1931 
(12)* 3 Japanese (C. crenata, 4 yrs.) crossed with “S8&” (9 yrs.) 
(13)* 1 Japanese Forest Type (C. crenata var.) crossed with Chinese 
Chinquapin CC. Seguintt) 
(14) 15 “S8” (9 yrs.) crossed with American chestnut (U.S. D. A. 
) 
and North Haven, Conn. 
(Total) 156 hybrid nuts 
The following notes about these crosses may be of interest. 
The figures in parentheses (as explained above) refer to the par- 
ticular combination under discussion. 
(1) and (2). Long Island Hybrids.—TVhe rank and file of our 
hybrids are Japanese-Americans (C. crenata X C. dentata), de- 
rived during the years 1931, 1932, and 1933 by pollinating females 
on splendid specimen trees (mostly pure Japanese) on private 
estates on Long Island, using American chestnut pollen furnished 
us through the Division of Forest Pathology, U. S. D. A. at 
Washington, D.C. It is possible that hybrids of somewhat differ- 
or the second and third pollinations with American pollen, catkins were 
— from wayside coppice shoots at North Haven, Conn. 
