Figure 182.—Adz, Type II, subtype b, round back (L. 1469):

a, front well ground; front edges distinct but irregular; b, back, well chipped but deep depressions in parts; bevel bounded by curved chin slightly marred by deep hollow near middle; poll surface slopes forward and upwards; c, side, coarsely chipped; back edge ground to remove sharp edges between flake depressions, resulting in narrow zigzag ground strip; d, sections show irregular depth of two sides, also rounded back with less projection than in preceding adz.