20 THE DESTRUCTIVE SPHINX. 



THE FOLLICLE. 



EXUVIA OP THE PUPA. 



The pupa state continues from the tenth of July 

 to the latter end of that month, or beginning of 

 August. 



Mr Worth examined his fruit-trees on the tenth of 

 July, when he obtained twenty follicles, and about 

 thirty larvse ; of the follicles, four were empty, the 

 insect having assumed the winged state. The larvte 

 had all arrived near the surface of the ground, for the 

 purpose of undergoing their great change. 



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 supei-ficial 

 application can affect it. The various substances 

 placed around the root of the tree, such as ashes 



