day. The flaps are raised and the caterpillars are destroyed by 

 ■crushing, or preferably by cutting in two with a knife carried for the 

 purpose. To make the burlaps most effectual, all crevices, and holes, 

 must be filled up and other hiding places removed. Signs nailed on 

 trees, also wooden tree guards defeat the purpose of the burlap and 

 .should be taken away. Citizens can help this work along greatly 

 by watching the burlap bands on the trees to see that they are not 

 "torn or blown off, and also by lifting the bands and destroying the 

 caterpillars if found. Everyone who is interested in trees should 

 learn to recognize the caterpillar, as well as other forms of the insect, 

 in order to know when the right one is found under the burlap, 

 ■as there are other species of much less importance that may take 

 .advantage of this hiding place. So far as possible, tree owners should 

 keep track of the trees and places where gypsy moth caterpillars 

 may be found, and notice should be given to the inspectors when 

 making their rounds. In no case should buelap bands be tacked 



DOWN OB covered WITH TAE, PAINT, WHITEWASH, OR OTHER SUB- 

 ■■STANCE, AS THIS DEFEATS THE OBJECT FOR WHICH THEY ARE PUT ON. 



Spraying. — In places where the caterpillars are very numerous, 

 .and where danger of spreading must be guarded against, infested 

 trees should be sprayed. Such spraying to be efficient must be made 

 •while the caterpillars are small. When approaching maturity they 

 .are very resistant to poison, and only a small proportion can be 

 killed by ordinary spray solutions. The best poison is lead arsenate, 

 as this can be applied in a strong solution without injury to the trees. 

 The quantity generally used against the moth is one pound of lead 

 arsenate to ten gallons of water. Where lead arsenate can not be 

 •obtained, Paris green- at the rate of one pound to 150 gallons of water 

 ■can be substituted. As there is some danger of burning the leaves 

 ■with this poison, it is necessary to slake two pounds of quick lime 

 and add the resulting milk of lime to each 150 gallons of spray mix- 

 ture. 



As has been already indicated, the work so far done has shown us 

 that the gypsy moth infests a much greater area than was at first 



