. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. Spiders. ENGINEERING SKILL OF SPIDERS. 223 and other portions of a ship, and showed how the right lines seemed al- ways to have been placed in the needed position. This aranead is so common that anj' one who chooses to test my descriptions and observe independent examples can easily do so for himself. (See Fig. 215.) This is not the only Tubeweaver that shows an engineering skill that challenges the admiration of human observers. Fig. 2
. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. Spiders. ENGINEERING SKILL OF SPIDERS. 223 and other portions of a ship, and showed how the right lines seemed al- ways to have been placed in the needed position. This aranead is so common that anj' one who chooses to test my descriptions and observe independent examples can easily do so for himself. (See Fig. 215.) This is not the only Tubeweaver that shows an engineering skill that challenges the admiration of human observers. Fig. 210 represents the , ordinary tubular snare of Dysdera bicolor, which was spun within Skill "^ paper box in which I had captured the spider, and of course in absolute darkness. In the morning I found a circular snare placed against the curved edge of the box, and stayed to the sides and bottom in a way that I have attempted with indifferent success merely to suggest in the figure. As I looked at it, and set to myself the problem of how to weave a mass of silken threads for example, in such a cylindrical shape and smooth, my admiration for the friend was much increased. At all and stay such a work out of sucl lines emitted from a spider's spin high place, at least in anima' The snare of Theridium suspended at all points verging threads attached spider takes her mass, and in the very strong tendon' to assume the shajje become thickened may occasionally be mated that they pre. into the corner of a room, that it would stand out stark cunning skill of my aranead events, the art that can build flimsy material as the silken ning spools, is entitled to a engineering. is a mass of intersecting lines the outer margins by con- to the surrounding site. The tion within the centre of this course of time there is a cy in the spinningwork _ of a nest. The lines in the centre, and found so approxi- sent the appearance ~ , , Fig. 211. Trestlework snare of a young Theridium. ,., of a net, not
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectspiders, bookyear1889
