. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . Fig. 174. Mode of spinning floc-culent spirals of Hj-ptiotes. TheSpiders progress from 4 is shown bythe course of the arrows. (After Wilder.) ^ Op. cit., page 649, note. 18(1 AMKlUtAX sriDEKS AND THEIU SriNMN(;\V(ii;K. centre, and has tlie finer })art arranged in regular loops or scalloi)s (seeFig. 170, a, b) in which separate fibres cannot be distinguished. The spiral lines, according to my own studies,when examined under an ordinarj^
. American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . Fig. 174. Mode of spinning floc-culent spirals of Hj-ptiotes. TheSpiders progress from 4 is shown bythe course of the arrows. (After Wilder.) ^ Op. cit., page 649, note. 18(1 AMKlUtAX sriDEKS AND THEIU SriNMN(;\V(ii;K. centre, and has tlie finer })art arranged in regular loops or scalloi)s (seeFig. 170, a, b) in which separate fibres cannot be distinguished. The spiral lines, according to my own studies,when examined under an ordinarj^ Jiand lens,present a milky appearance, as though composedof very thinly spun material. With a littleliigher power the supporting spiral thread is seenpassing through this milky mass. Placed undera microscope, the line is seen to consist of->threestrands, namely, the central spiral thread, andtwo curled lines, which alternately cross and re-cross each other above and below the centre,forming the loops as represented at Fig. 177. Inthis respect Mr. Emerton has correctly represent-ed the spiral line of Hyptiotes. The two curledlines seemed to me to be s
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Keywords: ., bookcentury1800, bookdecade1880, bookidamericanspid, bookyear1889
