J.D. McGUIRE 1896.
Many different primitive hole drilling devices have
been invented by different cultures around the world.
These four drawings
illustrate four of them, although
the next one is a pump drill, then a disc drill and the one
to the right
is an Eskimo strap drill.
techniques were used to drill shell beads at Cahokia.
It's only logical to theorize that one of these fairly simple
machines might have been used. Only the stone drill bits
and some of the drilled shells have survived. Most of the
lesser stable materials that would have been used to make
a drilling device have decayed long ago. But
some wooden objects found at Cahokia. In Mound 72 some
of the wooden cedar stretchers were preserved and in
feature 227 there was some matting and bark preserved.
Also in feature 237 there was a section of twisted knotted