. Comparative anatomy. Anatomy, Comparative. THE INTEGUMENTARY SYSTEM l8l membrane. The light is produced by the oxidation of luciferin secreted by the gland. No carbonic acid and little heat are evolved in the Fig. 138.—The presence of supernumerary teats (polymastism) in man supports the theory of the animal origin of the human body. Their repeated occurrence has received no other rational explanation. They are reversions or atavisms. (Redrawn after Wiedersheim.) CUT LIMB BUD POSITION OF DEFINITIVE GLAND GLAND ANLAGE. Please note that these images are extracted from scanned page im
. Comparative anatomy. Anatomy, Comparative. THE INTEGUMENTARY SYSTEM l8l membrane. The light is produced by the oxidation of luciferin secreted by the gland. No carbonic acid and little heat are evolved in the Fig. 138.—The presence of supernumerary teats (polymastism) in man supports the theory of the animal origin of the human body. Their repeated occurrence has received no other rational explanation. They are reversions or atavisms. (Redrawn after Wiedersheim.) CUT LIMB BUD POSITION OF DEFINITIVE GLAND GLAND ANLAGE. 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 Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son
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