. Elements of zoölogy. Zoology. 230 BACKBONED ANIMALS. scales or hairs; developed, like them, in sacs in the skin. They afford protection to the bird, determine its contour or shape, and are the means of enabling it to soar in the air, the long pinions being arranged to offer the greatest. Fig. 271.—Sparrow, showing the skeleton (Fig. 268) clothed in flesh, and the graceful outline produced by the coat of feathers. resistance. Taking a goose-feather (Fig. 272) as an ex- ample, we find that it is composed of several parts. The hollow, horny quill, 1, rests in a sac ; this leads to the shaft, 2,
. Elements of zoölogy. Zoology. 230 BACKBONED ANIMALS. scales or hairs; developed, like them, in sacs in the skin. They afford protection to the bird, determine its contour or shape, and are the means of enabling it to soar in the air, the long pinions being arranged to offer the greatest. Fig. 271.—Sparrow, showing the skeleton (Fig. 268) clothed in flesh, and the graceful outline produced by the coat of feathers. resistance. Taking a goose-feather (Fig. 272) as an ex- ample, we find that it is composed of several parts. The hollow, horny quill, 1, rests in a sac ; this leads to the shaft, 2, which is horny, grooved, and filled with a sub- stance resembling wood-pith. From the sides of the shaft spring the barbs, 3, that are so delicate that it would nat-. 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 Holder, Charles Frederick, 1851-1915; Holder, Joseph Bassett, 1824-1888, joint author. New York : D. Appleton and company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
