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timber. It is used in framed and doubled floors, for enabling short joists, such, as ceiling joists between the binders, to be got into place after the larger timbers are fixed, as shown in the illustration. The tusk tenon is shown by Figs. 199 to 201; struts tenoned into the heads of king- or queen-posts are shown by Figs. 202 to 204.

Toe Joints.—Simple toe joints are shown by Figs. 205 and 206, and a toe joint with tenon by Fig. 207.

Gantry Strut Joints.—Bird's-mouth and mitred butt joints for a gantry strut are shown by Figs. 208 and 209 respectively.