THE BARK LOUSE. Ot 
louse, often finds its way into the nursery, and unless 
the necessary precaution is taken, it will spread 
rapidly. Purchasers should be careful to give in- 
structions that no trees so affected, should be sent 
to them, for, until these little insects are removed, 
the trees will make but small headway in the young 
orchard. 
