according to the size of the tree, and of sufficient 

 length to encircle it; bind one of these around 

 the part intended to be secured, by two or three 

 ties of twine or woollen yarn, so that one half 

 shall be below, and the other half above the 

 surface ; draw earth, divested of grass or rubbish, 

 to the tree, pressing it with the foot, close to the 

 matting. The insects, governed by instinct, 

 will not lay their eggs in the matting, but will 

 seek elsewhere for a situation congenial with their 

 habits. If, however, there is a clammy moisture, 

 or portions of gum adhering to the main stem or 

 roots, these should be regarded as almost certain 

 indications of worms; every opening, however 

 minute, should be carefully probed, and the 

 direction taken by each worm, ascertained; cut 

 away that portion of the bark only, of which 

 the interior part has been destroyed, until you 

 arrive at the object of pursuit, which must be 

 removed and killed. Having in this manner 

 extirpated all that are to be found, trim the 

 edges of the wounds neatly, and fill up the 

 cavities with a composition consisting of two 

 parts of fresh cow-dung, one part of leached 

 ashes, to each gallon of which, add a handful of 

 ground plaster-of-paris, and as much water as 

 will reduce the whole mass to the consistence of 



PLATE XIX. 



