There were stones ground into smoothness tossed up
along the shore and the old man studied them most carefully. Many times
he had bent over a stream, watching, thinking, but this time he acted. He
noted a small sandstone block against which were rasping stones of harder
texture, and he picked this from the tumbling current and carried it to
his cave. Then, pouring a little water upon a depression in the stone's
face, he selected his best big arrowhead and began rubbing it upon the
wet sandstone. It was a weary work, for flint and sandstone are different
things and flint is much the harder, but there came a slow result.
Smoother and smoother became the chipped arrowhead, and two days
later--for all the waking hours of two days were required in the weary
grinding--Old Mok gave to Ab an arrow as smooth of surface and keen of
edge as ever flew from bow while stone was used. And not many years
passed--as years are counted in old history--before the smoothed stone
weaponhead became the common property of cave men. The time of chipped
stone had ended and that of smoothed stone had begun. There was no space
between them to be counted now. One swiftly became the other. It was a
matter of necessity, this exhibition of enterprise and sense by the early
man in the prompt general utilization of a new discovery.
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