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shark's tooth (Plate V, figure 22); ivory (Plate XVIII, figures 12, 13); 
beaver incisor (Plate XVIII, figure 14); and bear canine (Plate XVIII, 
figure 15). 
The specimen of antler (Plate XVIII, figure 11) is whittled to a point 
as well as cut at its base. A piece of antler, about 2 inches long by 1^ 
inches wide and 1 inch thick, apparently of a deer, found in heap D, 
and, though somewhat decayed, apparently cut around and broken off 
at both ends, is whittled on part of one edge and shows whittling scars 
such as would be made with a chisel the size of those made of beaver teeth 
(Plate XVI, figure 8). 
Cutting and Breaking. Cutting or grooving, followed by breaking, 
was the process by means of which pieces suitable for use were often 
cut from stone, bone, teeth, and walrus ivory. Stone was so cut by making 
two incisions opposite each other, one on each side, and breaking along 
the line of incisions, as is illustrated by five specimens. The first, a flat 
slate pebble (Plate XVIII, figure 1), shows, along the straightest side edge, 
where it was grooved about a third of the way through on each side and a 
piece broken off. On the lower portion of the edge the broken part pro- 
jected and was ground off, but on more than half of the upper part of the 
edge the break cut into the centre of the edge between the grooves and the 
grinding has not obliterated this sunken, broken surface. The specimen has 
a longitudinal, incised groove, nearly the length of the left edge and running 
off from it at a slight angle. The surface of the stone near this groove and 
to the nearest edge is scratched by incisions parallel in a general way with 
the edge and the groove. This may be a piece in process of manufacture, 
or one cut off to trim a slate pebble to shape for some object. 
An incised and cut greenish grey slate pebble (Plate XIX, figure 14) is 
flat, slightly over a quarter of an inch thick, and was apparently oval. 
One edge shows clearly where it was cut nearly half through by incising 
on each side, broken along the incisions, and the broken edge rubbed until, 
along about two-thirds its length, the signs of incising were obliterated. 
On one side, parallel with this cut edge, are two or more incised scratches 
which may have been caused by slips in making the incisions on this side. 
At right angles to these are two distinct and nearly parallel incised lines 
which may be the beginnings of further incising and breaking of the pebble. 
A piece of slate (Plate XVIII, figure 2) was incised on the obverse 
about one-third of the way through from the two side edges and a short 
distance in from the lower end and then broken, leaving a raised broken 
surface on the middle third of this side. The incision is fresh looking and 
clearly striated, indicating a rapid sawing rather than a slow wearing. 
On the upper left side of the broken part the incising undercuts the broken 
surface, and may be seen to have had an acute bottom rather than one 
shaped like an inverted M, as is the case in cuts made with a set saw. The 
side edges, top, and bottom, are all broken surfaces, but the right side edge 
also shows a whittled or scraped surface, and a short strip on the left side 
of the bottom was incised apparently to facilitate breaking off that end. 
The reverse has been scraped. The piece, judging by the material and 
its size, appears to have been cut from a larger piece that was being made 
into some object, possibly a pipe. Another piece of slate from the same 
