Starting young orchards . the eggs, crawls forthto find a suitable place on the bark where it may insert its beakand settle down to draw nourishment from the tree. Whenfeeding begins the whitish scale, referred to above, soon formsand serves as a protection to the insect. When trees become so badly infested that treatment is neces-sary, the lime-sulphur and soluble oil sprays described in SpecialBulletin 4 will be found effective. OTSTER-SHELL SCALE, LepidosapJies ulmi Linn. (Figure 8, a).This native scale insect is named from its resemblancein shape to an oyster-shell. Its life-history is sim


Starting young orchards . the eggs, crawls forthto find a suitable place on the bark where it may insert its beakand settle down to draw nourishment from the tree. Whenfeeding begins the whitish scale, referred to above, soon formsand serves as a protection to the insect. When trees become so badly infested that treatment is neces-sary, the lime-sulphur and soluble oil sprays described in SpecialBulletin 4 will be found effective. OTSTER-SHELL SCALE, LepidosapJies ulmi Linn. (Figure 8, a).This native scale insect is named from its resemblancein shape to an oyster-shell. Its life-history is similarto that of the scurfy-scale. There is but one broodannually and the winter is passed as an egg. It does not spreadfrom tree to tree very rapidly, and the damage which it doesis slight as compared with that of some other insects. Whereit becomes established on a tree, however, it will sometimes mul^tiply until the bark of trunk and branches will be entirelycovered, giving the tree a very peculiar appearance and really. Figure 9. Young Gray Rabbits.


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