Half hours with insects . exas, a figure ofwhich we reproduce (Fig. G3). He says that it dwells underold logs, rocks, in old stumps, under the bark of dead trees,under old fences, Itetween the shingles on house-tops and par-ticularly about the jambs and hearths of fire-places, In tem-per they are hasty and will employ their weapons on slightoccasions. The pain caused by their venom, when injectedinto ones flesh, is very quickly felt and quite severe, givingthe idea of a burning-hot fluid thrown into the system. It 18 Packard.] RELATIOISrS OF INSECTS TO MAN. 83 does not last long, nor does it s
Half hours with insects . exas, a figure ofwhich we reproduce (Fig. G3). He says that it dwells underold logs, rocks, in old stumps, under the bark of dead trees,under old fences, Itetween the shingles on house-tops and par-ticularly about the jambs and hearths of fire-places, In tem-per they are hasty and will employ their weapons on slightoccasions. The pain caused by their venom, when injectedinto ones flesh, is very quickly felt and quite severe, givingthe idea of a burning-hot fluid thrown into the system. It 18 Packard.] RELATIOISrS OF INSECTS TO MAN. 83 does not last long, nor does it swell much, and is not so pain-ful, nor does it produce so much iuconvenience as the stingof the honey bee. In countries where they abound, peopledo not regard them with much terror. Chickens are veryfond of them and voraciously devour every one they canfind. The scorpion brings forth its young alive. The centipede is an annoying and even dangerous insect;the poison glands are lodged in the head, opening into the Fig. American Scorpion. channelled jaws as in the spiders. The bite of the largerspecies is most formidable. Few are aware how painful and anno3ing is the irritationset up by the hairs of certain caterpillars. The hairs ofmany kinds are finely barbed ; such are those of the Ctenuchafigured in our frontispiece. The caterpillar feeds on grass,and I extract from my notes an account of the mode inwhich it constructs its cocoon, tearing its slender barbed 10 84 HALF HOURS WITH INSECTS. [Packard. hairs from its body and dextrously weaving them into a firmtexture without the aid of silken threads, the hairs beingheld firmly in place by the barbs. June 13th, the Ctenucha larva began to construct its co-coon. Early in the morning it described an ellipse, uponthe side of the glass vessel, of hairs plucked from just behindthe head. From this elliptical line as a base, it had by eightoclock built up rather unequally the wall of its cocoon, insome places a third of the distanc
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1881
