Figure 175.—Adz, Type I, long narrow variety (c. 784):

a, front, well ground, not so narrowed on butt; sides less sloped out; b, back, well chipped, except for knob near bevel making chin irregular and rounded off by grinding passing on to back, right corner rounded off reducing width of cutting edge; c, side view shows longitudinal convexity of front and back, part of back surface seen; d, cross sections emphasize nearer approach of front width to that of back, steeper sides and comparative thinness compared to the thick variety.