. Elementary biology; an introduction to the science of life . Fig. 220. The gypsy moth [Poiihetiia dispar). {a, b, c, shghtly enlarged ; d, shghtly reduced) This animal was introduced into this country about i86g, in the course of some experiments made to find a substitute for the silk moth, and in twenty years it became so great a nuisance that the legis- lature of Massachusetts made an appropriation for the study of methods to be used in checking the insect. In ten years over a million dollars was spent in the fight, but further work was stopped by some of the legislators whose regions had
. Elementary biology; an introduction to the science of life . Fig. 220. The gypsy moth [Poiihetiia dispar). {a, b, c, shghtly enlarged ; d, shghtly reduced) This animal was introduced into this country about i86g, in the course of some experiments made to find a substitute for the silk moth, and in twenty years it became so great a nuisance that the legis- lature of Massachusetts made an appropriation for the study of methods to be used in checking the insect. In ten years over a million dollars was spent in the fight, but further work was stopped by some of the legislators whose regions had not been affected. The insects then multiplied to such an alarming extent that in 1906 about a quarter of a million dollars was again spent in the fight. a, male adult; b, female ; c, larva; d, pupa
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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
