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growing in the New York Botanical Garden. During the early 
part of September in the midst of a pronounced drought these 
two trees dropped their leaves until they were almost entirely 
defoliated. In a short time, however, buds that had formed for 
development in the following year opened and a new crop of 
leaves appeared. The oldest of these soon reached the normal 
size and during the latter part of October turned red and dropped 
from the trees in quite the normal manner. With the coming of 
the first hard-killing freeze of October 28, the younger leaves 
were killed and these became shriveled and dried and remained 
on the tree for some time. In some cases the new growth formed 
a scale-bud in the usual fashion, but in many cases the bu 
remained open and were killed by the cold. 
Thus in a single season two crops of leaves were formed and 
two sets of scale-buds developed, and when lateral buds developed 
branched twigs were produced. 
It should be noted, perhaps, that the two trees in questio 
are young trees about fifteen feet tall that were ae 
to present position about five years ago, and have quite 
likely not reached full root development for necessary root action 
in time of periods of summer drought. 
The twenty-fifth anniversary of the foundation of the Missouri 
Botanical Garden was celebrated at St. Louis on Thursday, 
Botanical Garden at this interesting event. A number of dis- 
tinguished European botanists were expected to attend and take 
part in the scientific programme during the celebration, but the 
European war prevented all of them, except Professor N. Wille, 
of the University of Christiania, Norway, leaving their va 
tions. Dr. and Mrs. Britton escorted Professor Wille to St 
Louis, stopping over a day at White Sulphur Springs, ae 
Virginia, in order to show him something of the vegetation of 
the mountains there: Professor Wille is a highly distinguished 
authority on fresh-water algae and during the visit to White 
