256 



The Spraying of Plants. 



trees very thoroughly with the arsenites early in spring. It 

 may be advisable to make the first application before the 

 blossoms open, and another after their fall. The value of such 

 applications is still a disputed point, and it is more fully dis- 

 cussed under " Spraying for the curculio," page 68. My own 

 experience leads me to believe that apples in thoroughly 

 sprayed orchards suffer comparatively little from this insect. 

 Jarring the trees has also been recommended, but this is not 

 always practicable. Sheep and hogs may be of service in an 



FIG. 45. Apples distorted by curculio injuries. 



affected orchard, but unfortunately apples which are stung by 

 the curculio do not fall to the ground to such an extent as do 

 those attacked by the codlin-moth, and only a small number 

 would be destroyed by this means. 



Fall Web-worm (Hyphantria cunea, Harris). Description. 

 The mature insect is a moth, pure white in color, with an ex- 

 panse of wings of about one and one-fourth inches. The insect 

 is widely distributed throughout the country, and when undis- 

 turbed, the larvse may do considerable injury, not only to fruit 

 trees, but to many other plants, since they are not very par- 



