WHOLE OR REWORKED
MICRODRILLS

KUNNEMANN TRACT AT THE CAHOKIA MOUNDS SITE-

-SOUTHERN ILLINOIS
GREG PERINO COLLECTION
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    All the drills in this picture are good representative

examples of whole drills. They have not been damaged

from end snapping or excessive use wear. They are

also larger than the average size drills in the collection.
   Morse (1983) places the rounded shaped drills into a

"cylindrical" category. Sixty percent of the 449 blades

found on the Mississippian Zebree site in northeast

Arkansas were cylindrical. He also places forty percent

in a "tabular" category. Morse says that cylindrical

microliths have "either rounded and worn tips or beaked

and worn tips----sometimes they are polished". He also

goes on to say that "rounded tip microliths are probably

drill bits for perforating shell beads-----beaked tips

probably functioned as gravers for grooving shell or
bone preparatory to splitting".
   There are approximately 473 complete micro-drills

in Greg Perino's collection. The drills in this picture

range in size from 1 1/16 inch (1.7cm) to 1 5/16 inches
(3.3cm) long.

Twelve whole micro-drills from the Cahokia Mounds site.

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