These comprise axes, hatchets, and adzes. They consist of a combination of a striking tool with a cutting tool, the cutting edge being of stronger form than those described in a previous section (p. 230), in order to support the strain resulting from their being applied with greater force. The construction of these tools necessitates the addition of a handle or " helve," whose shape, length, and method of attachment to the blade have no small influence on the effectiveness of the tool.