Where Mortises Should Be Used
: AN ANALYSIS OF TENONING, MORTISING, RABBETING AND BEADING
Most important of all is a general idea of places and conditions under which mortises should be resorted to. There are four ways in which different members may be secured to each other. First, by mortises and tenons; second, by a lap-and-butt; third, by scarfing; and, fourth, by tonguing and grooving.