72 
immemorial survived from such severe winters as, for instance, 
that of 1930 with a temperature as low as 15° F. below zero, while 
normally the lowest temperature for months of December, January, 
and February here ranges from 5° to 10° I. below zero. It is 
not unlikely that seeds from this locality of the two chestnuts 
should prove hardy in your place.” 
Regarding the connection of winter injury with the blight, the 
behavior of the Chinese chestnuts at our trial grounds in Hamden 
is of interest. In my report for 1934 I said, referring to a certain 
strain of Chinese chestnut which we have had growing since and 
including 1929, “ The Chinese chestnut, as far as blight resistance 
is concerned, is our finest stock. For the whole six years we have 
had these trees they have never shown a sign of blight.” Last 
year, however, we found to our dismay that the extreme cold of 
the winters of 1932-3 and 1933-4 had been too much for them. 
Five had been partly winter killed at the base and were badly 
infected with the blight at this point: one had been entirely winter 
killed (not blighted) and did not even put out its leaves in the 
Mr. Ching, during the fall, nuts of Chinese species (see p. 75) 
from the hardy trees at his arboretum. They have been planted, 
and 1f they germinate, the behavior of the seedlings will be watched 
with interest. 
New Trees Planted—We received in April, 33 one year old 
seedlings from the U.S. D. A. Division of Forest Pathology. 
The trees had all been grown from seed collected in China and 
Japan, as follows: 
No. of trees Species or variety Source 
3 Castanea Henryt Seeds collected by Peter Liu in 
An Huei province, China, at 
about 32° N. Lat 
21 GM, GN, GO, GP, GQ, GR, Seed collected in various kens * 
GS; Castanea crenata for- in Japan, between 32° and 
est types 40° N. Lat 
6 MAU, MAW; Castanea Seed collected by Peter Liu in 
mollissima Chekiang 
ye 
province, China, at 
about 30° N. Lat. 
*A “ken” is a prefecture or territorial division in Japan, 
