Elementary biology; an introduction to Elementary biology; an introduction to the science of life elementarybiolog00grue Year: 1924 ^r^?«i^ Fig. 256. Ancestors of man represented by remains of skulls /, Pithecanthrofiis erecitis, the ' erect ape-man ' of Java ; 2, the Neanderthal man ; s, the negroid man of Laussel; 4, Nebraska glacial man. These four types represent succes- sive advances in the evolution of the human races, although we must not think of them as a straight series of our ancestors. Compare the size of the brain at different stages of development: Pithecanthropus, 850 cc; Pi

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Elementary biology; an introduction to Elementary biology; an introduction to the science of life elementarybiolog00grue Year: 1924 ^r^?«i^ Fig. 256. Ancestors of man represented by remains of skulls /, Pithecanthrofiis erecitis, the ' erect ape-man ' of Java ; 2, the Neanderthal man ; s, the negroid man of Laussel; 4, Nebraska glacial man. These four types represent succes- sive advances in the evolution of the human races, although we must not think of them as a straight series of our ancestors. Compare the size of the brain at different stages of development: Pithecanthropus, 850 cc; Piltdown, 1300 cc; Neanderthal, 1600 cc; modem man, 1500-1800 cc.

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