182 msECTS mjUBious to the peak. 



" Another species of the coccus has lately been brought to my notice, 

 which seems to affect the Apple and the Pear in the same manner as 

 the above, and is sometimes found upon the same tree. It has, instead 

 of the white paper-like covering, a hard coriacious scale, of narrower 

 and longer shape, and the eggs are pearly white instead of red. I fear 

 that where this msect exists, it may prove a more troublesome enemy 

 than the white scale, as its hard covering forms a more effective protec- 

 tion against the wash recommended." 



After the coccus has acquired its shell, a simple 

 washing will not remove it. It must be scrubbed 

 off with considerable force, and in bad cases, with sand 

 and soap. 



THE SLUG. 



The pear-slug is another insignificant, but trouble- 

 some enemy. This slimy and disagreable fellow 

 attaches himself to the upper part of the leaf, in June 

 or July. 



It is about half an inch long, and somewhat resem- 

 bles a snail. It quickly devours all the succulent 

 portion of the leaf, the skeleton of which remains 

 upon the tree, and appears as if scorched with fire.- 

 Growth is stopped at once, and what fruit has set, 

 never attains any considerable size. Dust, lime, ashes, 

 and other substances, that will attach to the slime of 

 the insect, will, if thrown upon the leaves where it is 

 feeding, soon detach his hold, and cause him to fall off 

 and die. Soapsuds, potash-Water (made with six or 

 eight gallons of water to a pound of potash), or strong 

 tobacco-water, will speedily destroy this insect. 



I am happy to be able to add the result of some 

 investigations into the habits of this insect by Mr. A. 

 O. Moore : 



" The insect which we familiarly call the Pear Slug {Selandria cerasi,) 



