. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . k streams of silk. These issued fromeither side of the spinning rosette, and each stream was fed evidently bythe three spinnerets upon either side. (Fig. 230.) These two streams atonce seized hold upon the limbs of the entangled grasshopper, and as thespider began to revolve the insect they were reeledout, rapidly covering the whole insect with swathingmaterial. These streams of silk, after the gush,were drawn out alternately by
. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . k streams of silk. These issued fromeither side of the spinning rosette, and each stream was fed evidently bythe three spinnerets upon either side. (Fig. 230.) These two streams atonce seized hold upon the limbs of the entangled grasshopper, and as thespider began to revolve the insect they were reeledout, rapidly covering the whole insect with swathingmaterial. These streams of silk, after the gush,were drawn out alternately by the two hind —first one, and then the other, being used. Presentlythe spider dropped below her victim, and thencepassed to the side opposite, continuing her oper-ations until the insect was satisfactorily wound did not strike it with her fangs at all, butretired to her den, dragging after her the swathing thread, which waswidely divergent where it laid hold upon the grasshopper, but graduallyconverged as the spider moved away and closed her spinnerets, until it be-came a single thread. (Fig. 231.) This mode I have observed at Fig. 230. A double stream ofswathing silk. 252 AMERICAN SPIDERS AND THEIR SPINXINGWORK. If any emergency arise to require it, the spider can issue a jet of silkwith such rapidity and of sucli vokunc tliat it is evident that strong mus-cular contraction has been used upon the silk glands, thusforcing the liquid material from the spinning spools withoutany aid of the feet in drawing it out. That tliis is (piitewithin the ability of Orbweavers I am perfectly satisfied Ijy frequent Swath-ing. observation of the action of Arlaris when taking a particularlyhopper or locust, moth or blue During the action of swaththat work, the spider takes careare joined together and fasteneding the orb from sagging orof the orb goes on instinctivelyof conquest and capture. Somethe ends of the radii upon whichthe rapid motion of the spinnerlines, but
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