312 Report oF THE ENTOMOLOGISTS OF THE 
Collecting the cocoons.—Many of the cocoons are spun in places 
where they can be easily reached. In collecting and destroying 
them many useful parasites would be destroyed but in case of a 
serious outbreak the thorough collecting of the cocoons would 
accomplish more immediate good than the parasites. It would, 
however, be but little trouble to place the cocoons under a coarse 
netting and leave them until the parasites had escaped. The 
netting should be too fine to allow the moths to pass but coarse 
enough to allow the parasites to escape. 
Capturing the moths.—As previously stated the moths fly at 
dusk or later. They are attracted by a bright light, and may be 
captured by placing a lighted lantern over a tub of water, over 
which enough kerosene oil has been poured to make a thin film. 
The moths flying about the light will fall into the water. While 
this method may be of some value it is doubtful if many female 
moths will fly to the ight before having deposited their eggs, 
after which of course, it makes no difference whether they are 
attracted to the ight or not. 
Combating the insect when attacking shade trees.—All of the 
methods just described can be used to check the insect when 
attacking small shade trees. [or large trees banding is of much 
value. In some of the villages in which the caterpillars were 
abundant last spring, they were dislodged from the large trees by 
streams of hydrant water and prevented from going back up the 
trunks by the sticky bands. For spraying the large trees special 
apparatus is required. Steam power is usually used. A suitable 
outfit can be purchased for from about $200 up. The increase of 
shade tree insect pests and diseases make it almost necessary for 
a village to own a spraying apparatus to ensure the preservation of 
its shade trees. 
A method of combating the insects which has been tried with 
success is to encourage the school children to collect the egg masses 
by paying them a reasonable price per hundred. This may be 
done by the private individual or by the village or city authori- 
