1100 



tRVIT CULTURE. 



within it ; so that to 

 subdue them entire- 

 ly repeated visits to 

 the orchard should 

 be made, and not a 

 fragment of a nest be 

 permitted to remain, 



Canker-Worms 



usually hatch about 

 the time 'when the 

 young leaves of the 

 apple push from the 

 bud, when the little 

 Canker-worms clus- 

 ter upon and con^ 

 sume the tender 

 leaves. When full 

 grown 1 , the insect 

 measures about an inch in length. 

 These caterpillars are called Loopers, 

 because they alternately loop and ex- 

 tend their bodies when in motion. 

 They are also called Measuring-worms. 

 To attack an enemy with success, 

 it is essential that we know his vul- 



Fig. 1508. — The 

 Grape-vine Bark 

 Louse. 



Fig. 1510.— Larva ol 

 the Grape-vine Flea- 

 beetle. 



Pig. 1511. 



Grape-vine 



Flea-beetle. 



Fig. 1509.— The American Procris. 



nerable points. In this in- 

 stance, since the females are 

 without wings, if they can 

 be prevented from crawling 

 up the trees to deposit their 

 e && s > a great point will be 

 gained. Tar mixed with oil 

 to prevent its drying, and 

 applied either directly 

 around the body of the tree 

 or on strips of old, canvas or 



