ELM-BARK BEETLE. 43 
might do a deal of good. Or, if it is the constant habit of the Karwigs 
to run down the inside of the frames to reach the ground, a band of 
cart-grease run along inside, or a strip of tarred cloth run along, might 
catch great numbers, or at least check advance. 
In one of his papers on Earwigs, Prof. Westwood mentioned that 
soaking a bandage in sweet oil was a good method of protection for 
any special purpose, and if a rough band moistened in some cheap 
coarse oil answered equally well, this could without difficulty be laid 
on the ground at the bottom of the inside of the frames. 
The common methods of trapping Earwigs are too well known to 
need comment, but we do not know whether they would act with the 
somewhat different habits of this ‘‘lesser’’ kind, and a little further 
study of the infestation when specially seen at its destructive work in 
frames might give us a good deal of useful knowledge. 
ELM. 
Elm-bark Beetle. Scolytus destructor, Oliv. 
A 
) eT ES 
TEMNIINTh 
UN TET u MTR 
LOTT AN 
’ tp 
ScoLyrus DEstRucToR.—Beetle, much magnified (from ‘Forest Protection,’ by W. 
R. Fisher); workings in Elm bark, from life. 
The Elm-bark Beetle is one of the very common and very injurious 
bark-infestations of this country. Quietly, and often without the pre- 
gence of the mischief being observed (unless by good fortune attention 
