JOO CULTURE AND MANAGEMENT 



eggs on the twigs, in the same manner as her progeni- 

 tor in the preceding year. Thus is an annual progeny 

 generated, and in this manner is the species perpetu- 

 ated. It will therefore appear evident, that if proper 

 care be taken to d< stroy these vermin annually, and 

 if all proprietors of orchards will act in concert with 

 this view, the species may be entirely annihilated. 

 The clusters of eggs which contain the young brood, 

 very nearly resemble in colour the bark of the tree, 

 but by a vigilant search they may be detected, and at 

 any leisure time after the month of August, the twigs 

 to which they are attached, should be cut off, and 

 burnt, or the eggs otherwise destroyed. But when 

 this is omitted, and the caterpillars are hatched, and 

 have constructed their nests, and are rambling among 

 the branches for food, a different method must be a- 

 dopted. The trees during the spring and first part of 

 summer should be carefully searched every two or 

 three days, in the morning or evening, while the in- 

 sects are enclosed in their tents, when they are easily 

 crushed with the fingers, or some instrument, or the, 

 branch may be cut off and destroyed. It is asserted 

 that spirit of turpentine, or common fish oil, applied 

 to the nest, will penetrate through, and kill every 

 caterpillar within it ; and it is also said, that soap suds 

 will answer the same purpose. The honourable Tim- 

 othy Pickering has communicated to the Mass. Agri- 

 cultural Society, an eligible method of exterminating 

 caterpillars, more especially when their nests are con- 

 structed on the extreme branches of large trees not 

 accessible by ladders. It consists of a brush made of 

 hog's bristles introduced between two stiff wires, close- 

 ly twisted, similar to the common brush for cleaning 

 the inside of bottles. Apiece of wire full one tenth 

 of an inch in diameter, about three feet long, doubled, 

 and leaving a small loop in the middle, is closely twist- 

 ed for the length of about eight or ten inches from the 



