SMITHSONIAN INSTITUTION LIBRARIES 
;—ININTININIIAITN 
3 9088 01272 7772 
wages, to keep a constant lookout for evidences of borer attack on 
valuable trees. On this head Southwick has reported that in 1893 
he spent two months in fighting this insect alone in the city parks of 
New York, collecting wagon loads of limbs and branches and destroy- 
ing the lense or pupe. 
SMetmaiune 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 new 
trees, and fertilizers should be used in order that the trees may be 
always thrifty, the better to withstand attack. This means protect- 
ing them from the attack of aphides, scales, and defoliators, such as 
tussock moths and the fall webworm, and keeping them free from 
disease. 
Finally, in the control of this species promptness and thoroughness 
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 who also suffer 
from the ravages of the pest. 
Norr.—After this publication was in type we received information that trees in 
the college yard of Harvard University, Cambridge, Mass., are being severely injured, 
the large elms being the most seriously attacked. 
Approved: 
JAMES WILSON, 
Secretary of Agriculture. 
WasuineTon, D. C., May 27, 1909. 
[Cir. 109} 
O 
