ing,
disease-resistant hybrids. Some will be retained for testing here. If
the resulting trees are not sufficiently blight-resistant, they will be
crossed again with the Chinese.

In the summer we received by air mail from Dr. Aldo Pavari, of the
_Stazione Sperimentale di Selvicoltura_ in Florence, Italy, two tubes of
pollen of the European chestnut, _Castanea sativa_, of the varieties
_pistolese_ and _selvatico_. These pollens were also applied to our best
Chinese trees. They resulted in 12 good nuts which have been shipped to
Dr. Pavari.

Further, we have on our Sleeping Giant Plantation, Hamden, Conn.,
several hybrids, now 16 years old, of the Seguin and the Chinese
chestnuts, the former species being also a native of China, but dwarf
and everblooming and remarkably prolific. These hybrids are excellent as
nut producers, since they inherit the large-sized nut of the mollissima
parent, combined with the increased productivity of the Seguin parent.
Furthermore they are extremely blight-resistant.[33] These hybrids have
therefore been intercrossed among themselves this year, chiefly for the
benefit of the Italian people. One hundred and eight nuts from
reciprocal crosses of these hybrids were shipped to Italy. Also, in
response to a request, we sent nuts of our best Chinese and Japanese
trees and of the _mollissima-seguini_ hybrids to M. C. Schad of the
_Station d'Amelioration du Chataignier_, Clermont-Ferrand, France.

[33] These hybrids will shortly be put on the market, under the
sponsorship of the Conn. Agr. Expt. Sta. and the Division of Forest
Pathology, U.S.D.A. As regards the everblooming habit of the Seguin
parent, that character seems to be lost or at least partly suppressed. A
second flowering of one of the hybrids usually occurs in August.

~Other crosses.~ Two Chinese-American trees in our plantation at the White
Memorial Foundation near Litchfield, Conn., bore a considerable number
of female flowers this year for the first time. They have been crossed
with the fine Japanese tree of Mr. A. N. Sheriff at Cheshire, Conn.,
figured in my report for 1948-49. (P. 92, fig. 3, of 40th Rept. of
N.N.G.A.) From them, 75 nuts were harvested of the combination CAxJ.
Four crosses were made on the trees at Redding Ridge, Conn., in the
cooperative plantation of Mr. Archer M. Huntington, resulting in 73
nuts. Also, the resistant Americans on Painter Hill, Roxbury, Conn.,
were again crossed with CJA's and Chinese from ou