. Darwin, and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions. Evolution; Heredity. Morphology. 93 their crowns. Indeed, in this respect it would seem that even in the anthropoid apes there is the be- ginning of a tendency to degeneration of the molai teeth from behind forwards. For if we compare the three molars in the lower jaw of the gorilla, orang. and chimpanzee, we find that the gorilla has five well-. N AT. SIZE OKAhTG- Fig. 24.—Molar teeth of lower jaw in Gorilla, Orang, and Man. Drawn from nature, nat. size (/\\ Mus. Coll. Stirg.\ marke
. Darwin, and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions. Evolution; Heredity. Morphology. 93 their crowns. Indeed, in this respect it would seem that even in the anthropoid apes there is the be- ginning of a tendency to degeneration of the molai teeth from behind forwards. For if we compare the three molars in the lower jaw of the gorilla, orang. and chimpanzee, we find that the gorilla has five well-. N AT. SIZE OKAhTG- Fig. 24.—Molar teeth of lower jaw in Gorilla, Orang, and Man. Drawn from nature, nat. size (/\\ Mus. Coll. Stirg.\ marked cusps on all three of them ; but that in the orang the cusps are not so pronounced, while in the chimpanzee there are only four of them on the third molar. Now in man it is only the first of these three teeth which normally presents five cusps, both the others presenting only four. So that, comparing all. 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 Romanes, George John, 1848-1894. Chicago The Open Court Pub. Co
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