to be the fillet
or channel worked at the side of the bead. If the tongues are not painted
before the work is put together, the shrinkage will cause the raw wood to
show and thus make the joint too much in evidence.

[Illustration: Fig. 99.--Matchboarding Vee'd Both Sides.]

[Illustration: Fig. 100.--Double-tongued Matchboarding.]

[Illustration: Fig. 101.--Double-dovetailed, Tongued and Grooved.]

Fig. 100 shows a "Double tongued and grooved" joint used in the wholesale
cabinet factories. It is preferred for the jointing of cabinet stock, and
the amateur can make a similar joint by working two grooves and inserting
loose tongues.

Fig. 101 is the end view of a "Double-dovetailed, tongued and grooved"
joint, and Fig. 102 is a sketch of a similar joint having only one
dovetailed tongue.

From a constructional point of view Fig. 101 is far and away the best
joint that has yet been produced. Unfortunately, however, there is not at
the present time any hand tool that will economically produce it, owing
probably to the fact that the joint is the subject of a patent. The
dovetail tongue tapers slightly throughout its entire length, gripping
the joint on the principle of the wedge and squeezing the glue into the
pores of the wood.

[Illustration: Fig. 102.--Joint with Single Dovetail Tongue and Groove.]

[Illustration: Fig. 103.--(A) Cross Tongue. (B) Feather Tongue.]

[Illustration: Fig. 104.--Method of Secret-nailing Hardwood Flooring
Boards.]

CABINET-WORK JOINTS.--With regard to tongued and grooved joints which
apply more particularly to the jointing of cabinet work, Fig. 93 is
produced by planes which are specially made for the purpose. One plane
makes the tongue and another the groove. The handiest sizes to buy are
those which joint 3/8 in., 5/8 in., and 3/4 in. timber, it being usual to
dowel or loose-tongue thicker boards. The 3/8 in. partitions (or, as they
are sometimes called, dustboards) between the drawers of a sideboard or
dressing chest are in good work jointed in this manner. The 5/8 in. and
3/4 in. ends and tops of pine or American whitewood dressing tables,
wardrobes, etc., call for the larger sized plane.

LOOSE TONGUES.--There are two methods of jointing with loose tongues,
viz., the use of the cross tongue, Fig. 103 A, and the use of the feather
tongue, Fig. 103 B. Cross tongues are the stronger when glued in their
position and can be used very much thinner than feather tongues. Feather
tongue