The evolution of man: a popular exposition of the principal points of human ontogeny and phylogenyFrom the German of Ernst Haeckel . (III.) and the Tapir ( digit has entirely disaj)peared. So, too, in the Rumi-nants (, the Ox, Fig. IV.) the second and fifth digits arealso aborted, and only the third fourth are well deve- 3o6 THE EVOLUTION OF MAN. loped. Finally, in the Horse, only one digit, the third, isperfectly developed (Fig. VI., 3). And yet all these diversefore-feet, as also the hand of the Ape (Fig. 271) and thehuman hand (Fig. 272), have originated from the samecommon
The evolution of man: a popular exposition of the principal points of human ontogeny and phylogenyFrom the German of Ernst Haeckel . (III.) and the Tapir ( digit has entirely disaj)peared. So, too, in the Rumi-nants (, the Ox, Fig. IV.) the second and fifth digits arealso aborted, and only the third fourth are well deve- 3o6 THE EVOLUTION OF MAN. loped. Finally, in the Horse, only one digit, the third, isperfectly developed (Fig. VI., 3). And yet all these diversefore-feet, as also the hand of the Ape (Fig. 271) and thehuman hand (Fig. 272), have originated from the samecommon five-fingered parent-form. This is proved, not onlyby the rudiments of the aborted digits, but also by thehomologous disposition of the wrist-bones (Fig, 273, a-p).{Vide supra, p. 124.) The same story is also told by the germ-history of thelimbs, which is originally identical, not only in all Mammals,but in all Vertebrates. However different the limbs of thevarious Skulled Animals (Oraniota) aftersvards appear intheir fully developed state, they nevertheless all originatefrom the same simple rudiment. (Cf. Plates VI. and VII.,.
Size: 1438px × 1738px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectembryology, booksubjectembryologyhum
