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much influence woodpeckers may have in holding this particular 
insect in check it is difficult to say. e find abundant evidence 
that these birds do work on the infested branches, but possibly 
in quest for other insects than the bark-beetles. There seems to 
be no reason however to assume that they do not feed on these 
beetles, since they can be easily reached in the summer when 
feeding the oe tissues of the tree and also when boring into 
the bark. e ichneumon-flies are said to parasitize the bark- 
beetles by pen their eggs within the body of the insect, 
thus killing them before they have had a chance to emerge. 
ARTIFICIAL MEANS OF CONTROL 
The means recommended by the Department of Agriculture for 
controlling this insect is the cutting down and destroying of all 
infested trees or parts of trees in order to reduce the number of 
in cts. This must be done between October and May to catch 
the insects before they emerge. 
he dead or dying hickories should be marked during the 
summer and fall in order to determine which trees are dead or 
partially dead. These may then be cut down during the winter 
and early spring. The infested trees or branches should be 
my in such a way as to destroy the grubs present in or just 
under the bark. This may be done by removing the dark and 
burning it or by using the wood and bark for fuel. Spraying 
is not recommended for this insect. 
FRED J. SEAVER. 
THE MAY FLOWER EXHIBITION 
The Horticultural Society of New York, in coéperation with 
the Garden, held an exhibition of plants and flowers in the 
Museum building, Saturday and Sunday, the tenth and eleventh. 
tables were filled with exhibits. Large collections of the flowers 
of shrubs and trees, tulips, and wild flowers were exhibited. 
