Vulgar words in Form and Function - A Contribution to the History of Animal Morphology (Page 1)
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~ ~ ~ Sentence 4,193 ~ ~ ~
"[379] As examples of palingenetic processes in the development of Amniotes, for instance, may be quoted the separation of two primary germ-layers, the formation of a simple notochord between medullary tube and alimentary canal, the appearance of a simple cartilaginous cranium, of the gill-arches and their vessels, of the primitive kidneys, the primitive tubular heart, the paired aortæ and the cardinal veins, the hermaphroditic rudiment of the gonads, and so on.