310 
HALF HOURS WITH INSECTS. [Packard. 
the air, capped by this basket, reminding one of a small boy 
walking along with a large bushel basket over his head. 
Then there are the tent caterpillars, which spin from their 
mouths an immense quantity of silk, out of which they build 
large tents between the branches of trees, and run rope- 
walks along the upper side of all the branches leading away 
Fig. 242. 
Filbert Grape Gall. 
from their tent. The nest of a species of Tortrix which 
lives on the wild cherry consists of a large mass of leaves 
sewed together with silk, forming a shelter from the heat and 
rain and a protection from the birds. 
There are numberless modifications of leaf-rolling habits 
among the smaller caterpillars, but after all no insects, with 
22 
