Complimentary 
NEW SERIES VOL. Vlll 
NO. I 
ARNOLD ARBORETUM 
HARVARD UNIVERSITY 
BULLETIN 
OF 
POPULAR INFORMATION 
JAMAICA PLAIN, MASS. APRIL 21. 1922 
On the morning of November 26 th eastern Massachusetts was visited 
by a storm of frozen rain which was more serious in its injury to trees 
than any previous storm of this character in the state of which there 
is an authentic record. Branches of trees were covered with a coat of 
ice often in the case of terminal branchlets several times thicker than 
their diameter, making a load which taxed the strength of the strong- 
est trees. The amount of the rainfall varied in different parts of the 
region affected and the damage to trees was often local. Fortunately 
the rain was not accompanied by a high wind. For some reason not 
easy to explain the damage was largely confined to trees with decid- 
uous leaves, and conifers were generally uninjured. Even the White 
Pine {Pinus Strobus) suffered rarely, although no tree which grows 
naturally in Massachusetts has more brittle branches which are usually 
broken by storms of this character. Fortunately the Arboretum was 
on the edge of the region of greatest damage, and in Franklin Park 
and Forest Hills Cemetery only half a mile to the southward trees were 
not injured. In the Arboretum the injury was confined to the region 
east and south of the summit of Bussey Hill, to the neighborhood of 
the Centre Street Gate, and in a less degree to the southern slope and 
to the summit of Peter’s Hill. The trees which were most injured were 
the Willows in the belt along the northern margin of the north meadow 
which makes the boundary between the Arboretum and the Boston 
Parkway. These Willows lost many large and small branches but will 
soon recover. The damage to Birch-trees was more serious and no 
other group of trees here has suffered so severely. Nearly every plant 
in the collection was injured and the damage to the River Birches 
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