The great toe has a certain independent working, like a thumb, and the wrinkles of the sole resemble those of the palm.

These markings disappear when the pedal extremity has come to be employed for purposes of support.
"The hands and feet of a human being are strikingly like those of the chimpanzee in conformation, while the gorilla's resemblance to man in these respects is even more remarkable.

The higher apes have been classified as 'quadrumana,' or 'four-handed,' because their hind feet are hand-shaped; but this designation is improperly applied, because the ape's posterior extremities are not really hands at all.

They merely look like hands at the first glance, whereas, in fact, they are but feet adapted for climbing.

The big toes cannot be 'opposed' to other toes, as thumbs are to the fingers, but simply act pincer-wise, for the purpose of grasping.