Against the depredations of this insect, many 

 supposed remedies have been prescribed, such as 

 the application of hot water, tanner's bark, and 

 flower of sulphur, to the root of the tree, and soft 

 soap and lime-wash to the trunk; but it is 

 obvious, that no application of this kind can 

 injure the insect, without coming in contact with 

 it whilst it remains in the egg, or infantile 

 state, on the outside of the tree, for after having 

 penetrated to the interior, no superficial applica- 

 tion can affect it. The various substances placed 

 around the root of the tree, such as ashes and 

 sand, the uncovering of its base during winter, 

 and covering again for the summer, are also 

 pronounced by Mr. Worth, from his experience, 

 to be inefficient, and even injurious to the health 

 of the tree. 



" The best plan of guarding against the ravages 

 of the insect, which I have found, is to examine 

 the trees early in the month of July; take a 

 bricklayer's trowel, and opening the ground 

 around the trunk, the lodgment of the insect 

 will at once be discovered, by the appearance of 

 gum, and it can readily be destroyed ; one person 

 can thus examine more than a hundred trees 

 in less than half a day, and very few, if any, of 

 the insects will escape. But in order the more 



PLATE XIX. 



