New York AGRICULTURAL EXPERIMENT Station. 413 
4. Banding the trees.—In conjunction with collecting the 
egg masses or spraying, banding will serve to protect the trees 
from reinfestation by migrating caterpillars. This is often 
desirable when there are badly infested trees in the immediate 
vicinity. The band may be made of a strip of raw cotton or 
sticky fly paper. The cotton should be tightly fastened about 
the middle so that it is loose above and below. The barbed 
hairs of the caterpillar become entangled in the cotton fibres, 
and it is unable to pass over the band. In order to be effective, 
the bands should be renewed from time to time as they become 
soiled or matted by rain. In this latitude the bands should be 
employed during the months of J une, July and August. 
ON SHADE TREES. 
The same measures that are recommended for the treatment 
of this pest in orchards are also applicable to the treatment 
of shade trees, only here more emphasis should be placed on 
the value of banding the trees and collecting the egg masses. 
Spraying shade trees is not practicable for the average prop- 
erty owner because the trees are usually of large size. Such 
operations require special machinery and men having consid- 
erable knowledge of spraying methods. Spraying of shade 
trees is not done to any great extent except where the work 
is directed by the municipal authorities. However, it is in 
the power of every resident to completely protect his trees 
by destroying the egg masses and banding the trees to prevent 
reinfestation by migrating caterpillars, 
