. The common frog. Frogs. THE COMMON FROG. 87 which is adjoined to the sacrum. The pubis, in man, meets its fellow of the opposite side in the middle line in the front of the body. The two ischia (one to each haunch-bone) support man's l^ody when in a sitting- posture. The pelvis of man is often quoted as one of the most peculiar and characteristic parts of his skeleton, and its shape in him is very pecuhar. Nevertheless the pelvis as it exists in frogs and toads is a far more exceptional structure. It is so in the extraordinary elongation, yet small vertebral attachment, of the haunch-bo
. The common frog. Frogs. THE COMMON FROG. 87 which is adjoined to the sacrum. The pubis, in man, meets its fellow of the opposite side in the middle line in the front of the body. The two ischia (one to each haunch-bone) support man's l^ody when in a sitting- posture. The pelvis of man is often quoted as one of the most peculiar and characteristic parts of his skeleton, and its shape in him is very pecuhar. Nevertheless the pelvis as it exists in frogs and toads is a far more exceptional structure. It is so in the extraordinary elongation, yet small vertebral attachment, of the haunch-bones {ilia), as also in the fact that these bones as well as the other pelvic elements {ischia and piibes) are all closely applied to each other in the middle line ^<$c. Fig. 52. Fig. 53. Fig. 52.—Right side of Pelvis of Frog, il, ilium ; is, ischium ; p, pubis. The thiee bones meet at the upper margin of the acetabulum. Fig. 53.—Dorsal view of pelvis of Frog, showing the narrow ends of the ilia for attachment to the backbone, and also the close approximation of the acetabula. of the body. Thus these elements form a bony disc, and the two sockets {acetabula) destined, respectively, for the heads of the two thigh-bones, come to be. 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 Mivart, St. George Jackson, 1827-1900. London, Macmillan and co.
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1881
