Though only five specimens were recovered that can be classified
as drills, they comprise four types. The first, represented by one
specimen, is of the expanding base T-shaped variety. The base is
flattened and the point is diamond-shaped in cross-section; the
flakes were struck from either side to meet in the middle and form
the central ridge. The second type, possibly a variant of the first,
comprises two specimens, one fragmentary. The bases expand but are
thick and irregular, rather than flat. The point of the complete
example is biconvex to diamond-shaped in cross-section and exhibits
fine workmanship. The third type differs from the first two in having
a straight base. It is biconvex in cross-section, with rather fine
flaking meeting along the midline. The fourth variety has the outline
of a small side-notched projectile point. Upon examination, however,
the edges of the lower one-third of the point show signs of extensive
abrasion and polishing. It is very probable that such a tool was hafted
for use. The method of usage is less certain for the others. All five
were made from varieties of flinty quartz.
[Illustration: FIGURE 32—End scrapers, type one. A-E snub-nosed. Actual
size.]
[Illustration: FIGURE 33—End scrapers. A-C, type three. D-F, type two.
Actual size.]
[Illustration: FIGURE 34—Side scrapers. Actual size.]
[Illustration: FIGURE 35—Discoidal scrapers. Actual size.]
[Illustration: FIGURE 36—Uncompahgre scrapers. Actual size.]
[Illustration: FIGURE 37—A-E, serrated scrapers. F, spoke-shave. Actual
size.]
[Illustration: FIGURE 38—A-D, drill types one-four. E-I, gravers.
Actual size.]