. A text-book of animal physiology, with introductory chapters on general biology and a full treatment of reproduction ... Physiology, Comparative. 662 ANIMAL PHYSIOLOGY. In walking, quadrupeds like the horse use the limbs alter- nately, and in a diagonal sequence, so that the right fore-leg. Fig. 503.—Red-throated dragon {Draco hcematopogon, Gray), shows a large membranous* expansion (6, b) situated between anterior (d, d) and posterior extremities, and supported by the ribs. The dragon by this arrangement can take extensive leaps with perfect safety. Fio. 504.—Flying lemur (Galeopithecus vol
. A text-book of animal physiology, with introductory chapters on general biology and a full treatment of reproduction ... Physiology, Comparative. 662 ANIMAL PHYSIOLOGY. In walking, quadrupeds like the horse use the limbs alter- nately, and in a diagonal sequence, so that the right fore-leg. Fig. 503.—Red-throated dragon {Draco hcematopogon, Gray), shows a large membranous* expansion (6, b) situated between anterior (d, d) and posterior extremities, and supported by the ribs. The dragon by this arrangement can take extensive leaps with perfect safety. Fio. 504.—Flying lemur (Galeopithecus volans, Shaw). In the flying lemur the membranous expansion (a, 6) is more extensive than in the flying dragon. It is supported by the neck, back, and tail, and by the anterior and posterior extremities. The flying lemur takes enormous leaps ; its membranous tunic all but enabling it to fly. The bat, Phyllorhina gracilis (Fig 505), flies with a very slight increase of surface. The surface exposed by the at exceeds that displayed by many insects and birds. The wings of the bat are deeply concave, and so resemble the wings of beetles and heavy-bodied, snort-winged birds. The bones of the arm (r). forearm (d), and hand (n, n, n) of the bat support the anterior or thick margin and the extremity of the wing, and may not inaptly be compared to the nervures in corresponding positions in wing of beetle (Pettigrew). and the left hind-leg are associated. Trotting corresponds to running in man, and there is the same diagonal action. There. 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 Mills, Wesley, 1847-1915. New York, D. Appleton
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