If any race of quadrupeds, especially the most advanced of them, lost by the necessity of circumstances, or by some other cause, the habit of climbing trees, and to grasp branches with their feet, as with the hands to cling ; and if the individuals of this race, during successive generations, were forced to not use their feet for walking, and stopped using their hands like feet
there is no doubt, of According to the observations described in the previous chapter, that these were not quadrumana at the end turned into bimana, and that the thumbs of their feet were constantly being left out of fingers, they used their feet do more than walk.
Furthermore, if individuals of which I speak, driven by the need to dominate and to see both far and wide, trying to stand, and took the habit of constantly generation generation;
yet there is no doubt that their feet do prissent imperceptibly conformation own to keep them upright in an attitude that their legs do not acquire calves, and that these animals might then walk with difficulty on foot and hands at once.
Finally, if these individuals ceased to use their jaws as weapons to bite, tear, or capture, or as pincers to cut the grass and eat them, and they do serve as the fissent mastication;
yet there is no doubt that their facial angle would become more open, that their noses do shortens more and more, and at the end being fully cleared, they would their incisors vertical.
Let us suppose now that a race of quadrupeds, as the most advanced, having acquired, through a consistent routine in all its individuals, the conformation that I just mentioned, and the ability to stand and walk upright, and then she has managed to dominate other breeds;
then we will develop:
1. that this race more advanced in his abilities, being by then overcame control the other, will have seized on the surface of the globe of all places that suit them;
2. she has chased the other races eminent and in case of dispute with him the goods of the earth, and that she will be forced to take refuge in places that it does not;
3. as affecting the great multiplication of races that are close by their reports, and keeping them relegated to wood or other desert places, it has stopped the progress of the development of their faculties, while she, mistress of spread everywhere, to multiply without hindrance from others, and live by many troops, will be successively created new needs that have excited the industry and gradually perfected its means and faculties
4. finally, this preeminent race has acquired absolute supremacy over all others, will be succeeded in putting between itself and the most advanced animals, a difference, and, somehow, a considerable distance. Thus, the race of quadrupeds the most advanced will have become dominant
change their habits because of the absolute power it has made on others and its new needs;
acquire gradually changes in its organization and many new faculty;
simply the most advanced of the other races in the state where they have arrived;
and get between her and these distinctions very remarkable.
1. that this race more advanced in his abilities, being by then overcame control the other, will have seized on the surface of the globe of all places that suit them;
2. she has chased the other races eminent and in case of dispute with him the goods of the earth, and that she will be forced to take refuge in places that it does not;
3. as affecting the great multiplication of races that are close by their reports, and keeping them relegated to wood or other desert places, it has stopped the progress of the development of their faculties, while she, mistress of spread everywhere, to multiply without hindrance from others, and live by many troops, will be successively created new needs that have excited the industry and gradually perfected its means and faculties
4. finally, this preeminent race has acquired absolute supremacy over all others, will be succeeded in putting between itself and the most advanced animals, a difference, and, somehow, a considerable distance. Thus, the race of quadrupeds the most advanced will have become dominant
change their habits because of the absolute power it has made on others and its new needs;
acquire gradually changes in its organization and many new faculty;
simply the most advanced of the other races in the state where they have arrived;
and get between her and these distinctions very remarkable.
Jean-Baptiste Lamarck - Zoological Philosophy
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