Word: teething
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Dates: during 1930-1939
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...took with a grin. "If you can walk away from it," he used to say, "it's a good landing." Once or twice Frank Hawks was unable to walk away-one crash in 1932 put him in the hospital for months and filled his famous smile with store teeth; in another he somersaulted off a line of overhead wires, landed upside down. Overhead wires were Frank Hawks's pet hate. "They ought to bury 'em all," he used to growl...
...when Charles Darwin, armed with a mass of scientific facts, suggested that man had an ape ancestor, enthusiastic converts to his theory of evolution immediately pictured a great-grandfather-&-son development of gorilla or chimpanzee into Homo sapiens. Subsequent unearthing of scattered thighbones, skullcaps, jaws and teeth led to many diverging theories of the ape's transition, showed that evolution is as unstraightforward as the relationship of second cousins once removed, that it moves in zigzags, circles, spirals...
Regardless of theories, however, all contemporary anthropologists agreed that early man differs from anthropoid apes in posture, brain case and teeth. Plaster casts of skull interiors usually reveal faint lines made by convolutions of the brain. These are more developed in man than in ape. When chewing, the ape moves his jaw straight up and down. Man rotates his jaw. Hence there are decided differences between ape and man in the size and shape of their teeth, particularly the molars. Prehistoric human skeletons which anthropologists have pieced together demonstrate these differences in one respect or another. While possessing many apelike...
Pithecanthropus erectus, of low brow, apelike jaw and human teeth, who browsed on the island of Java during the early Pleistocene period (Ice Age), 500,000 to 1,000,000 years ago. Dr. Eugene Du Bois, Dutch scientist wb discovered the remains in 1892, changed his mind about Pithecanthropus' genus several times, finally concluded that he was an ape. Britain's Sir Arthur Keith, however, world's greatest authority on fossil man, considers Pithecanthropus the earliest known form...
Sinanthropus pekinensis (Peking man), of receding, apelike chin and human brain case and teeth, who is approximately the same age as Pithecanthropus. His skull was discovered near Peking in 1929 by Chinese Anthropologist...