10 APPLE-ROOT BLIGHT REMEDIES. 



robust tTian the first and third, thickest at base and gradually more slender-tbence 

 to the tip, basat portion gently curved, the remaining part straight, its apex nearer 

 that of the third than that of the rib vein, about the same distance from the apex of 

 the rib vein that the apex of the third vein is from that of the second. Marginal vein 

 robust and black from the base to the stigma, very slender and black along the outer 

 margin of the stigma, slender and brown from the stigma around the tip of the wing 

 and along its inner margin to the apex of the first vein, thence robust and black, 

 gradually becoming brown towards the base, stigma dark sm^oky brown, oblong, its 

 opposite sides nearly parallel, abruptly converging to an acute point at each end, the 

 basal end more acute than the apical, and slightly attenuated. Lower wings more 

 clear and hyaline, marginal vein and outer filament of the rib vein pale brown, inner 

 filament black and very gradually diverging from the outer, both filaments undu- 

 lated beyond the base of the second vein; the two discoidal veins blackish, the first 

 slightly undulated, its apex the same distance from the apex of the second that this 

 is from that of the inner filament of the rib vein. ' • 



An abnormal variety has fallen under my notice in one instance, in which the apex 

 of the fourth vein of the right wing was slightly forked. 



When a tree ceases to grow with its usual vigoPj and its leaves 

 are of a paler and more yellow hue than usual, and no borers in 

 the trunk, or other obvious cause of disease can be discovered, 

 the [iresence of this blight upon its roots may be suspected, and 

 the earth should be removed from them sufficiently to ascertain 

 whether excre,scences such as have been above described are 

 formed upon them, and if discovered, it will be well to clear 

 away the earth from around them as touch as can conveniently 

 be done, and pour strong soapsuds upon them, that it may satu- 

 rate the crevices in the excrescences, for there is little doubt that 

 every insect that is reached and wetted by this solution will im- 

 mediately perish. And ashes should be freely mingled with the 

 soil with which the roots are covered. It is probable that by a 

 resort to these measures an affected tree can in most instances be 

 cured. 



It is chiefly in nurseries, upon the roots of young trees taken 

 up to be transplanted, that the blight will be detected. In con- 

 sequence of it. thousands of trees in our country have undoubted- 

 ly been thrown away. But there is probably no necessity for 

 rejecting such trees. If the root be dipped in soap suds, unless 

 the lice upon it are a much hardier race than thelV kindred which 

 dwell upon the leaves and twigs of trees, they will at once be de- 



