10 FARMERS’ BULLETIN 1708. 
and boys and others who may be engaged at lower wages to keep a 
constant lookout for evidences of borer attack on valuable trees. In 
1893 a New York entomologist spent two months in fighting this 
insect alone in the city parks of New York, collecting wagonloads of 
limbs and branches and destroying the contained larvee and pupe. 
MAINTAINING TREES IN THRIFTY CONDITION. 
If valuable trees are to be protected, the insect should not be 
allowed to breed in useless growth. The borers in such trees should 
be destroyed or the trees promptly felled and burned. Care should 
be exercised in transplanting trees, and fertilizers should be used 
in order that the trees may be always thrifty, the better to withstand 
attack. This also means protection from the attack of aphides, 
scales and defoliators such as the white-marked tussock moth and 
the fall webworm, and keeping them free from disease. 
PROMPT AND THOROUGH TREATMENT ESSENTIAL. 
Finally, in the control of this species promptness and thorough- 
ness can not be too strongly emphasized. The bisulphid of carbon 
remedy should always be used where applicable, and the inspection 
system advised should be instituted in all public parks and on city 
streets infested by this pest. Individual owners of valuable trees 
should become acquainted with the pernicious nature of this borer, 
and united action should be secured with neighbors whose trees suffer 
from the ravages of the pest. 
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