This composition, or cement, must be brought up to a level with the ribs in the thorax, and cover the viscera in the abdomen; after the cement is set, or nearly so, sprinkle a plentiful quantity of powdered tannic acid on the top of it. Then bring the sternum down to its proper place between the ribs, and also the internal fascia of the abdomen over the viscera; and last, the flaps of the skin are brought together and neatly sewed up, taking a stitch alternately under and above the skin. Should the mouth have a tendency to remain open, or the lips be too far apart, sew the lips together with surgeon silk, passing the needle up inside of the lip, near the gums, also through the nether lip in a similar manner, from one corner of the mouth to the other, where the last stitch can be tied up in a slip knot. Before the mouth is sewed up it is always necessary to fill the inside of the mouth with cotton, well saturated with embalming fluid. In case a great number or all the back teeth be missing, which might cause a sinking of the cheeks, and thereby to a great extent disfigure the body, introduce some cotton, prepared as above, between the gums and the cheeks; it will give the body an appearance more natural, and less emaciated. This rule ought to be applied not only in embalming, but also at ordinary times. When laying out a corpse, the mourners and friends of the family will always appreciate anything of the kind, which tends to beautify the remains and divest death of its hideousness. The nostrils must also be filled with the same composition of alum and plaster of paris; let the cement be thin enough in this case, so it may be injected into the _nasal fossea_ by means of an India rubber syringe, until the nostrils are completely full; then hold it in place with some cotton wads saturated with embalming fluid. After the body has been so far prepared, it remains to encase it into a transparent and elastic covering, which will prevent the attacks from the atmosphere, and, at the same time, render the body impervious to moisture. For this purpose, procure from some first-class druggist some Canada balsam (it must be fresh and perfectly colorless, as it is prone to grow thick and yellow in time); then procure a vessel—a glass jar with large mouth should be preferred; this jar should be large enough to hold twice the amount of Canada balsam on hand; bring the jar near the fire, if it is in winter, and submit the balsam to a gentle heat until it is liquefied; so soon as the balsam has attained the consistency of thin honey, add to it the same amount of the best spirits of turpentine that can be obtained, and stir with a glass rod until the balsam and turpentine have been thoroughly mixed; then apply the mixture on the body by means of a camels-hair brush, very wide, and similar in shape to the brushes generally employed for moistening the paper used in copying letters.