The lower specimen in the picture, known as a Roller Pestle, was used like a modern rolling-pin.
Stone Pestles are rarely found in Mounds, but were used mostly by the primitive Indian tribes.
The stone Pestle and Mortar were man’s first grist-mill, out of which developed the water-driven grist-mills of pioneer days and, later on, the great electrically-driven flour mills of today.
Fig. 14—Chisels and Celts, or Ungrooved Axes.
These, with the Grooved Axe illustrated on the following page, were the commoner types of implements used for chiseling and chopping. They could also be used as wedges. With the Celt, when used as a Chisel or Hand-hatchet, the human arm was the handle. If it served as a Hatchet, Tomahawk, or Axe, it was lashed to a wooden handle by means of rawhide thongs.
The Celt was used for a great variety of purposes. In Ohio and near-by states it is often called a “skinning stone,” and it would have been a very convenient tool for removing the hides of animals. Some Celts are very rough in appearance, with only the edges ground to a polish, while others are smooth and highly polished over their entire surfaces.
The Celt is a very ancient tool, and is found in large numbers on the surface of the ground in almost every part of the world where men have lived.
Fig. 15—Grooved Stone Axes.