. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. Courlesy^ American Museum oj Natural History' FIGS. l6l AND 162. HAND AND FOOT OF MACACUS RHESUS. Left. Palmar surface of hand showing well-dcvelopcd manual characteristics, pronounced digitation, short but opposable thumb. Right. Plantar surface of loot showing well-developed heel, narrow sole, long, narrow toes, and long opposable hallux. culties. Among themselves they are constantly on the move. Repose seems totally foreign to their behavioral program. Sc
. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. Courlesy^ American Museum oj Natural History' FIGS. l6l AND 162. HAND AND FOOT OF MACACUS RHESUS. Left. Palmar surface of hand showing well-dcvelopcd manual characteristics, pronounced digitation, short but opposable thumb. Right. Plantar surface of loot showing well-developed heel, narrow sole, long, narrow toes, and long opposable hallux. culties. Among themselves they are constantly on the move. Repose seems totally foreign to their behavioral program. Scampering, swinging, chatter- ing, screaming, they go all day long among the trees, either without design in their actions, or changing some fleeting purpose so frequently that their entire formula of behavior has the appearance of ceaseless, kaleidoscopic motion. They are very quarrelsome, constantly fighting or teasing each other. And here, as in all of their activities, the object of their anger, the victim of their mirth is as quickly shifted as their lleeting attention. They feed upon spiders. 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 Tilney, Frederick, 1875-1938; Riley, Henry Alsop, 1887-. New York, P. B. Hoeber, inc.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbrain, booksubjectevo
