an unheard of growth for a two-year-old chestnut seedling. (Ina 
coppice shoot this would not be remarkable.) Most of the trees 
made two seasons of growth this year, and many of the hybrids 
of both 1931 and 1932 made three seasons of growth during the 
same period. This rapid growth is doubtless to be accounted for, 
at least in part, by the fact that the seedlings are planted in good 
. 8 Chestnut bur, four-fifths natural size, containing three nuts and 
oda from the cross-pollination of a pistillate flower on the Japanese 
tree of Mr. Paul Hammond, Syosset, Long Island, using pollen from Amer- 
ican trees growing in the Government nursery at Bell, Maryland. (2497.) 
garden soil and are kept under clean cultivation throughout the 
season. 
2. Hybridization Work in 1933 
For the hybridization work this year the American chestnut pol- 
len was supplied us, as usual,* through the cooperation of the Di- 
— 
* In 1932, since the late-flowering Japanese chestnut of Mr. Renville S. 
Smith was the only tree worked, we were able to secure our own pollen 
from native shoots near Lake Mahopac, N. Y., and from New Milford, 
Conn, 
