47 
owners and also the continued interest and cooperation of the 
owners of the three other trees, namely Mr. Beekman Winthrop, 
Mr. Bronson Winthrop, and Mr. Renville S. Smith. 
It is indeed a pleasure to report that as a result of the more 
extensive pollinations of 1931, 124 nuts were secured in the fall 
(Table IT). On the advice of the Division of Forest Pathology, 
TABLE II 
RESULTS OF CROSS POLLINATIONS, 1931 
Owner Folk Winthrop Hammond! Minturn Smith 
Location Brielle O. Westbury Syosset E. Norwich O. Bay Totals 
No. of branches 
bagged....... 3 47 72 11 (plus 87 240 
2 selfed) 
No. of branches 
bearing nuts .. 9 4 6 1 39 59 (24.5% 
Total no. of 
flowers 
pollinated?.... 41 83 144 16 321 605 
omitting 
those selfed) 
Flow ers devel- 
oping nuts.... 10 5 7 1 68 91 (15%) 
No. of nuts 
ripened....... 14 5 10 1 94 124 
1 Although on the estate of Mr. Bronson Winthrop, this tree has been 
so designated, after the present tenant, to distinguish it from the tree belong- 
ing to Mr. Beekman Winthrop. 
2A “flower” here ans a flower cluster (see Fig. 3). Usually three 
owers make up a oe cluster, surrounded by the involucre which later 
develops into the “bur” of the aneciniih In case all of the three flowers 
are fertilized, three nuts in the bur are the result. It is evident from 
the table that the trees bear usually more than one flower cluster on a 
branch. This means either that several androgynous catkins are borne on 
one branch, or that the androgynous catkin, if single, bears more than one 
flower cluster. In the case of the Smith tree both of these statements are 
true. It was not uncommon _ to find on this tree four flower clusters on one 
catkin. The number of pistillate flower clusters on the androgynous catkins 
is fairly constant in een ee ae tree. 
U. S. Department of Agriculture, and of the Boyce Thompson 
Institute, these were planted immediately after harvesting. Be- 
fore planting, each nut was given a number, weighed, and measured 
as to its greatest length, breadth, and thickness. All were planted 
in 4-inch pots or large pans, some in sandy soil obtained from the 
