267, consists of a series of alternate tails and tenons which fit one another closely.

It is used in tool-chests and in other strong as well as fine boxes.
To make a thru multiple dovetail joint, first square lines with a sharp pencil around the ends of both members to locate the inner ends of the dovetails and the pins, d e on X, Fig.

250, and l m on Y.The distance of this line from the ends of each member may, if desired, be slightly (1/32") greater than the thickness of the other member.
Divide this line, d e, on the member to be dovetailed, X, into as many equal spaces as there are to be tails (dovetails).

From the division points of these spaces, a b c, to the right and left lay off one-half of the greatest width of the mortises to be cut out, and also the same distance from d and from e, as at f f f f and g g g g.
The strongest arrangement of dovetails is to make them equal in width to the spaces between them, as in No.

48, p.267.For the sake of appearance they may be as much as four times as wide as the spaces, but ordinarily should not be wider than 1-3/4".
Set the bevel-square so that it will fit the angle A B C, Fig.