69 
Hamden.—We have, in all, 116 of our own hybrids growing at 
Hamden. 
The data on the average heights of these different hy- 
brids and their growth during 1935 are presented in the following 
table. 
TABLE OF GROWTH RATES OF HYBRID CHESTNUTS AT HAMDEN CONNECTICUT 
, . 
1935 

Name 
Smith 1931 
crenata X dentata........... 
Winthrop 1931 
crenata X dentata........... 
Smith 1932 
crenata X dentata........... 
Hammond 19 
n 
Graves 193 
S8 X crenata (forest type).... 
crenata (forest type) X dentata 
(moll.-pumila) * dentata..... 
Smith Hybrid 1931  dentata 
(ORaeWR artsy toot een 

Number 
of Trees 
Living 
October 

Average 
Height 
October 

Average 
Mean 

Average 
axi- 
mum 
Length 
Growth 
1935 
19 in, 
26 in, 
2A. 
18 in, 
16 in. 


* Numbers in parentheses refer to seedlings cut off by rabbits but probably 
still alive. 
