438 Injurious Insects. 
it suffers from the aphis; a species of haltica attacks the young 
plants; several moths deposit their eggs upon it; honey dew is 
often destructive; it is also liable to attacks of mildew and fire- 
blight towards maturity. 
The poles of oak, ash, larch and chestnut, are the most dura- 
.ble. They should be put into a shed during winter; where this 
cannot be done, they are placed on end in the form of a cone, 
leaning against each other. — Gard. Far. Die. 
The gathering, kiln-drying and bagging of hops, is an import- 
ant branch of the business of the planter. It is in this part of the 
process that experience and judgment are most valuable. The 
time to gather the blossoms is indicated by the turning of the 
lower leaves on the vine, and the bright straw color of the seeds. 
The vines should be cut a foot or two from the ground, as the 
bleeding of the stems will weaken the roots if severed close to 
the earth. The poles are laid over long, narrow boxes, which 
receive the hops as girls and others pick them from the vines. 
After the latter become dry, they should be cut off the poles, burnt 
and the ashes kept to apply to the hills of the parent roots next 
season. — Genesee Far. 
SOME OF OUli INJURIOUS COLEOPTERA. 
BY JAMES EIGHTS. 
Scolytus Destructor. — The intelligent observer in traversing the 
streets of our city, any time during the season of summer, will 
not unfrequently have his attention attracted to the partially de- 
cayed and dead appearance of many of the saialler twigs at the 
extremity of the branches of some of the fine elm trees that so beau- 
tifully adorn our waysides and various parks. And he will like- 
wise have cause to remark that the remainder of the foliage pre- 
sents an unusually, withered and unhealthy aspect to the sight. 
This appearance has been chiefly attributed to the deleterious 
effects of the gas made use of in lighting the city, and which has 
been communicated to the trees, by some accidental leakage of 
the pipes made use of for its conveyance. How far this may be 
correct we have had no accurate means of determining, but, upon 
a closer inspection of the trunks and larger branches, he will not 
fail to perceive, in the greatest profusion, small circular perfora- 
tions through the bark, leading to thousands of equally small 
