. Animal biology; Human biology. Parts II & III of First course in biology. Biology. FIG. 286.—SKELETON OF BIRD. Rh, vertebrae; Cl, clavicle; Co, coracoid; Sc, scap- ula; St, sternum; H, humerus; R, radius; U, ulna; P, thumb; Fe, femur; T, tibia. See Fig. 394. Questions : Which is the stiflest portion of the vertebral column ? How are the ribs braced against each other ? Which is longer, thigh bone or shin ? Compare shoulder blade with man's (Fig. 399). Which is the extra shoulder bone ? Compare tail vertebrae with those of extinct bird, Fig. 290. FIG. 285.— LEG BONES OF BIRD. middle has j
. Animal biology; Human biology. Parts II & III of First course in biology. Biology. FIG. 286.—SKELETON OF BIRD. Rh, vertebrae; Cl, clavicle; Co, coracoid; Sc, scap- ula; St, sternum; H, humerus; R, radius; U, ulna; P, thumb; Fe, femur; T, tibia. See Fig. 394. Questions : Which is the stiflest portion of the vertebral column ? How are the ribs braced against each other ? Which is longer, thigh bone or shin ? Compare shoulder blade with man's (Fig. 399). Which is the extra shoulder bone ? Compare tail vertebrae with those of extinct bird, Fig. 290. FIG. 285.— LEG BONES OF BIRD. middle has joints, and the outer toe has joints (Fig. 285). Is the thigh of a bird bare or feathered? The shin ? The ankle ? Where is the ankle joint of a bird ? Do you see the remains of another bone (the splint bone, or fibula) on the shin bone of the shank? (Fig. 285 or 286.) Why would several joints in the ankle be a disadvan tage to a bird ?. 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York, The Macmillan Co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiology, bookyear1910
