02' FRUIT TREES. 33 



fully in October, as far as the branches of a tree extend, 

 to half a spade's depth or five inches, so as completely 

 to invert the surface. A great number of chrysalids 

 would thus be exposed to the air and sun, and of* 

 course be destroyed. 2dly. Breaking the clods and 

 smoothing the surface with a rake, and passing a 

 heavy roller over it, so as to make it very hard, and 

 without cracks. By these two operations every vest- 

 ige of their downward path would be completely ob- 

 literated, and if any remained undisturbed below the 

 stratum of earth which has been turned up, they must 

 remain there, as it is utterly impossible for them to 

 force their way in the moth or miller state, through 

 such an obstruction as this layer of earth would op- 

 pose to them. In grass grounds the sods should be 

 turned with the grass side down, and placed side by 

 side, so as to be rolled ; the earth from which they 

 w r ere taken should be loosed and rolled also. It is 

 probable, that with this treatment no moths would rise 

 in the fall. The winter's frosts would heave and crack 

 the smooth surface, but it might be smoothed and har- 

 dened by the roller or other means, in March, with 

 much less trouble, time and expense, than the long 

 course of tarring requires. As lime, when slacked, is 

 reduced to an impalpable powder, and is thus well a- 

 dapted to close the openings in the surface to which 

 it may be washed by rains, Mr. P. is inclined to think 

 its good effects are produced in this way as well as 

 by its caustick quality." 



Mr. Kenrick's method of destroying- the Canker Worm. 



John Kenrick, esquire, of Newton, proposes as fol- 

 lows : From any time in June, after the worms have 

 entirely disappeared, until the 20th of October, let 

 the whole of the soil surrounding the trees, to the ex- 

 tent at least of four feet from the trunk, arid to a suit- 

 9 



