TO REMOVE INK STAINS.—Procure a two-ounce phial, put into it a pennyworth of oxalic acid, and fill it up with warm water; place on the stain a piece of white linen rag; shake the above solution, and then pour a few drops of it on the linen rag stretched on the stain. This should remove it entirely; but, very frequently, when logwood has been used in manufacturing the ink, a reddish stain still remains. To remove it, procure a solution of the chloride of lime, and apply it in the same manner as directed for the oxalic acid. I can guarantee this, after many trials.—W. J. G. TO CLEAN LEATHER CASES.—The following is a cheap and excellent plan to clean hat-cases, writing-desks, and any other leather materials:—Simply, oxalic acid dissolved in warm water, and the article cleansed with a piece of sponge. When dry, they are nearly equal to new.—H. K. TO CLEAN MARBLE.—Take two parts of common soda, one part of pumice-stone, and one part of finely powdered chalk; sift it through a fine sieve, and mix it with water; then rub it well all over the marble, and the stains will be removed; then wash the marble over with soap and water, and it will be as clean as it was at first. TO CLEAN PAPER-HANGINGS.—Cut into eight half-quarters a stale quartern loaf; with one of these pieces, after having blown off all the dust from the paper to be cleaned, by means of a good pair of bellows, begin at the top of the room, holding the crust in the hand, and wiping lightly downward with the crumb about half a yard at each stroke, till the upper part of the hangings is completely cleaned all round; then go again round, with the like sweeping stroke downward, always commencing each successive course a little higher than the upper stroke had extended till the bottom be finished. This operation, if carefully performed, will frequently make very old paper look almost equal to new. Great caution must be used not by any means to rub the paper hard, nor to attempt cleaning it the cross or horizontal way. The dirty part of the bread, too, must be each time cut away, and the pieces renewed as soon as at all necessary. TO CLEAN BEADS.—Mix up a small quantity of soft soap, spirits of turpentine, and powdered rotten-stone. Lay it on the beads with a rag, and rub off with a bit of fine linen or leather. TO RESTORE IVORY.—To bleach a card case, expose it to the sun in a close glass shade, previously washing it in spirits of wine and water, with a small quantity of soda in it. Allow it to dry very slowly in a cool place before exposing it to the sun. But, under any circumstances, carving in ivory is apt to split, and become unglued. For an ink spot, try a little salt of sorrel.—M. C.