Note 1481 — Chapter VI

Sometimes the gravels in which such implements were originally deposited have disappeared through denudation or other natural causes, leaving the implements on the surface. But the outside of such specimens always shows traces of decomposition, indicating their high antiquity. Other examples of implements of like shape, found on the surface in places where there has been no glacial drift, may be palæolithic, but their form is no sufficient proof of this, since they may equally well have been the work of the Indians, who are known to have fashioned similar objects.