Gluing Hair upon Mammals.—It is very seldom that a dry skin is mounted without there being upon it some spot or spots destitute of hair, which must be repaired. Sometimes it is only a small spot, sometimes it is nearly the entire head, or an entire leg from which the epidermis has come loose, carrying the hair with it, and leaving an unsightly bare spot. It requires a good deal of ingenuity, much skill, and tireless patience to glue hair upon an animal so that it will so closely resemble the natural growth that no one will notice the difference. But in every case, except some of the seals and sea-lions, this can be accomplished, if it be necessary, although very often it requires good judgment and the hand of an artist to do it.

Each mammal has its own peculiarities in regard to the quality, thickness, length, and general set of its hair, all of which must be carefully studied. When the hair grows long and thickly, the task is much easier than if it be thin or short.

1st. Procure a pair of very small curve-pointed forceps, so fine they will hold a single hair if necessary. (Price, 75 cents.)

2d. Procure a pair of small and sharp scissors, with sharp points.

3d. Procure a bottle of common fish-glue, or royal glue.

4th. If possible, procure a piece of useless skin, from which to cut the hair necessary to use in making the repairs.

Very often it is impossible to procure any pieces of skin with hair suitable for the purpose, and then the only way is to cut hair from the specimen which is to be repaired, picking out with the forceps a tiny bunch here and there in such a way that the bunches cut out will not show. This can nearly always be done in making slight repairs upon thick-haired animals, such as bears, wolves, monkeys, etc. But with such short-haired animals as the tiger, zebra, and giraffe, the hair must be procured elsewhere. Use the hair of any animal to repair the coat of another, so long as it will answer perfectly, no matter what the genus or species may be. Use tow, or jute, painted or dyed the proper color, if it is sufficiently like the hair which will surround it.

In order to treat this subject intelligibly, we will undertake to separate all terrestrial mammals into three classes, as follows:

1st. Animals with very close, short hair; as the tiger, zebra, horse, and giraffe.

Upon such animals as the above, the hair lies almost flat upon the skin, completely covering it with a very smooth, glossy coat. To repair hair upon such animals, procure pieces of skin having hair of the requisite quality, and soak them in clear water until decomposition sets in, and the hair easily comes out by the roots. The hair must not be cut off, or it will not answer. Be sure that your fish-glue is good and strong, and about as thick as castor-oil. Clean the bare surface of the skin by scraping it with a knife to remove all dirt, and give the glue a chance to take hold. With your small forceps, pull from the pieces of half-macerated skin a small bunch of hair of the proper tint, and with a small camel's-hair brush apply a drop of glue to the roots of the hair. Begin at the side of the bare spot where the hair grows directly away from it, and lay down your little bunch of hairs so that their tips shall fairly cover the roots of those nearest the edge. Then press down the bunch of hair thus placed in position, work the hairs slightly apart, and make them lie quite flat upon the skin. Follow up this process with untiring patience, and the result will be entirely satisfactory. I have seen large patches of hair glued upon a tiger so successfully that when finished the sharpest eye could not detect the repaired spots. But it was very slow work, requiring an hour's steady work to cover a spot of not quite two square inches.