No. 22. End mortise and tenon. The tenon is seen on two sides. Used for frames of various kinds.
No. 23. The mitre joint, used in picture frames, picture moulding, interior finish of houses, etc.
No. 24. Lap mitre joint; a combination of end lap and mitre; rarely used.
No. 25. Stretcher joint; a combination of end lap, mitre, and end mortise and tenon; used by artists for frames on which their canvas is fastened. The stretching is done by driving wedges from the inside.
No. 26. Dovetail; used as a splice.
No. 27. Single open dovetail for two pieces at right angles. When two or more are cut in the same place, we have the open or box dovetail.
No. 28. Box dovetail; used in cabinet work and boxes.
No. 29. Half-blind dovetail. The dovetails are seen from only one side; used in cabinet work, especially in drawer construction.
No. 30. Blind dovetail. When the two pieces are together, the dovetails are invisible. This joint calls for very accurate work. It is used in special cases, where strength is required, and yet it is desirable to hide the form of construction.
No. 31. Trick dovetail; not used in construction, and only of interest as a curiosity. The four sides of this trick combination are apparently exactly alike. It seems impossible for them to have been put together, and to bring out the effect it is well to have one piece in light-coloured wood, the other dark. The method of laying out and cutting is shown in the illustration. The dovetails that appear on the surface are only oblique sections of dovetailed-shaped tongues and grooves running diagonally from face to face.