be seen that applica-tions of solid substances are irot likely to prove practicable,and that forcheap and effective remedies we must look topeneteftting liquids. The cost of alcohol renders its exten-sive use impracticable. The volatile oils are, as a rule, pow-erful insecticides, but as they reach… … Fig. 2.—Mttilaspis Pomicobticis, Riley—a, male, ventral view, with witrgg elosed;6, do., dorsal view, with wings expanded; c, scale, enlarged, the hair lines sSe^wiDgnatural size; d, leg; e, portion of wing;/, autennal joint—greatly enlarged (after.SUfey).. e. g., naphtha, turpentine, etc.,are…
![An illustration from Dr. Sulzers Abgekürtze Geschichte der Insecten. Nach dem Linaeischen System / [Johann Heinrich Sulzer]. (1776)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b30415275-353-1.webp)
