. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. FIG. 89.—Lycosa, a running formula below. From Emer-ton. FIG. 90. — Attus, a jumping Emerton. they attack and devour one another. Consequently theymust be kept isolated and fed individually, and yet yieldin the end only an ounce or so (about 30 grammes) ofsilk. Other uses of spiders silk are : in the constructionof cross-hairs in telescopes, and in medicine as a narcoticin case of fevers, - - a temporary fad. Poisonous Spiders. — Spiders are feared by many peoplefrom a beli
. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. FIG. 89.—Lycosa, a running formula below. From Emer-ton. FIG. 90. — Attus, a jumping Emerton. they attack and devour one another. Consequently theymust be kept isolated and fed individually, and yet yieldin the end only an ounce or so (about 30 grammes) ofsilk. Other uses of spiders silk are : in the constructionof cross-hairs in telescopes, and in medicine as a narcoticin case of fevers, - - a temporary fad. Poisonous Spiders. — Spiders are feared by many peoplefrom a belief that they are very poisonous, even fatally have, indeed, biting jaws provided with poison- 92 ZOOLOGY glands, and their bite is often fatal to insects, and even tosmall birds and mammals. But most spiders cannot spreadthe chelicene sufficiently to make a bite in the human skin,and even the largest forms seem to inflict but a slightwound, scarcely ever greater than that of a stories of the severe effects of the bite of the Taran-tula, one of the Lycosidse, a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1900
