The evolution of man : a popular exposition of the principal points of human ontogeny and phylogeny . Fig. 254.—Third neck-vertebra of 255.—Sixth breast-vertebra of 256.—Second lumbar-vertebra of man. contact with the skull, are the neck-vertebras (Fig. 254),and are distinguished by a hole found in each of thetwo lateral processes. There are seven neck-vertebras inMan, as in nearly all other Mammals, whether the neckis long, as in the Camel and the Giraffe, or short, as in theMole and the Hedgehog. The fact that the number of theseneck-vertebras is always seven,—and there are
The evolution of man : a popular exposition of the principal points of human ontogeny and phylogeny . Fig. 254.—Third neck-vertebra of 255.—Sixth breast-vertebra of 256.—Second lumbar-vertebra of man. contact with the skull, are the neck-vertebras (Fig. 254),and are distinguished by a hole found in each of thetwo lateral processes. There are seven neck-vertebras inMan, as in nearly all other Mammals, whether the neckis long, as in the Camel and the Giraffe, or short, as in theMole and the Hedgehog. The fact that the number of theseneck-vertebras is always seven,—and there are but fewexceptions (explicable by adaptation),—is a strong argu-ment for the common descent of all Mammals; it can onlybe accounted for as a strict transmission from a common 282 THE EVOLUTION OF MAN. parent-form, from some Promammal which had seven neck-vertebrae. If each animal species had been a distinct crea-tion, it would have been far more to the purpose to havefurnished the long-necked Mammalia with a larger, and theshort-necked with a smaller number of neck-vertebrae. Theneck-ve
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Keywords: ., book, bookcentury1800, bookdecade1870, booksubjectembryologyhuman
