. The butterfly book [microform] : a popular guide to a knowledge of the butterflies of North America. Butterflies; Papillons. Pio, ?6.—Masnified representation of arrangement of the scales on the wing of a butterfly. Fio. 37.—Androconia from wings of male butterflies: a, Neonympha eurytus; b, At' gynnii aphrodite; c, Pieris oleracea. filled with air, the outer tube with blood, which circulates most freely during the time that the insect is undergoing the process of development after emergence from the chrysalis, as has been al- ready described. After emergence the circulation of the blood in
. The butterfly book [microform] : a popular guide to a knowledge of the butterflies of North America. Butterflies; Papillons. Pio, ?6.—Masnified representation of arrangement of the scales on the wing of a butterfly. Fio. 37.—Androconia from wings of male butterflies: a, Neonympha eurytus; b, At' gynnii aphrodite; c, Pieris oleracea. filled with air, the outer tube with blood, which circulates most freely during the time that the insect is undergoing the process of development after emergence from the chrysalis, as has been al- ready described. After emergence the circulation of the blood in the outer portion of the tubes is largely, if not altogether, suspended. These horny tubes support a broad membrane, which is clothed in most species upon both sides with flattened scales which are attached to the membrane in such a way that they overlap one another like the shingles on a roof. These scales are very beau- tiful objects when examined under a microscope, and there is considerable diversitv in their form as well as in their colors. The 18. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Holland, W. J. (William Jacob), 1848-1932. Toronto : W. Briggs
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Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectbutterflies
