26 
away, in Connecticut or even Massachusetts. It is quite certain 
that it did not come from the Highlands region nor from the 
Adirondacks. . . . The rocks in the Highlands and the Adiron- 
dacks of course are largely Precambrian granite and gneisses in 
which it would hardly be expected that anthophyllite would occur. 
. . It seems to me the greater probability that it has come from 
somewhere to the north of Long Tsland Sound.” 
On the question of the probable origin and mode of transporta- 
tion of the boulder, Dr. Ernst Antevs, one of the leading authori- 
ties on the phenomena of the Ice Age has kindly commented as 
follows: 
“ Preserved glacial striae record late, or the last, direction of 
ice flow. Crossing striae indicate that the direction of flow could 
change considerably. Therefore an erratic boulder can have been 
transported by two or more consecutive zigzag flows of the same 
ice sheet. It can have been carried by two or more ice sheets, or 
part of the way by a floating ice berg. 
“Therefore, the anthophyllite boulder can have been transported 
from) New Rochelle-Port Chester region southwestward by an ice 
sheet older than the last, or by an early flow of the last ice sheet. 
It can then have been carried southeastward by the last flow of the 
last ice sheet to the Brooklyn Botanic Garden. Or the boulder can 
have been carried by an ice sheet southward or southeastward from 
its ledge. It can then have drifted southwestward in Long Island 
Sound with a detached floating ice berg, and finally have been 
picked up by the last southeastward flow of the last ice sheet and 
brought to Brooklyn. If the bec 
fa 
rock-geologists insist that the 
boulder cannot derive from the region on the Hudson or west 
of the Hudson, its transportation from the northeast consequently 
can be explained.” 
In order to balance the treatment of the entrance a second boulder 
(of undetermined composition) was brought from the same lot 
across Washington Avenue and placed on the north side of the 
walk, opposite the first one. 
Late Fall Bloom.—Unseasonable warm weather, continuing un- 
til as late as December, caused a number of normally spring-bloom- 
ing plants to come into flower in late fall. A shrub of the flower- 
ing quince (Chaenomeles Maulei), in Section I, was photographed 
in full bloom on November 18. 
