224, p.

120), contains one of these stones.

The whetting, of course, is the reverse of that on the outside bevel gouge.
[Illustration: Fig.83.Whetting a Gouge.] The _knife_ differs from the chisel in two respects, (1) the edge is along the side instead of the end, and (2) it has a two-beveled edge.
Knives are sometimes made with one side flat for certain kinds of paring work, but these are uncommon.

The two-beveled edge is an advantage to the worker in enabling him to cut into the wood at any angle, but it is a disadvantage in that it is incapable of making flat surfaces.

The knife is particularly valuable in woodwork for scoring and for certain emergencies.