284 



LANDSCAPE GARDENING. 



insect it seems probable that the kerosene emulsion will be 

 effectual if applied with considerable force so as to throw it 



FIG. 166. MAPLE SCALE. 



(Howard : Circular, No. 3, Dept. Agr., 2d Series, Fig. 1.) 



in under the mass of insects and eggs which are so nicely 

 protected by the woolly cover that is of a somewhat oily 

 nature, thus preventing watery liquids from adhering or 

 penetrating to the bodies of the insects or masses of eggs. 



