We have received a communication from a correspondent asking for iiiloirnation respect- ing dyeing and staining ivory various colors. For himself, the correspondent states," the information will be very useful, and no doubt it will be as much so to many others." ', RED.—Ivory can be colored a beautiful red i with cochineal. The way to ao this is, first, I to clean the ivory article well with a strong I solution of soajj and then rinse it in water, so as to remove all grease lrom the surface. j Have a clean copper or other vessel (but not i iron) boiling with some ground cochineal j (enough to color the water a deep red) then add about as much cream of tartar as cochineal and some alum—chloride of tin is better than alum,ho wever—and then boil the ivory in this for a few minutes, then take it out and dip it in cold water; return it again for a few minutes longer to the boiling cochineal, then take it out and wash it in clean water, when it will be found to be a beautiful red color. The ivory articles may require a few dips back and forth from the cold water to the boiling cochineal, but with care the process will dye ivory a fine red color, better than any other known to us. The cream of tartar must be carefully used or it will injure the surface of the ivory. BLACK.—Ivory can ba colored a beautiful black by boiling it in a strong solution of logwood, some walnut bark, and copperas.— This color is easily dyed, and if the ivory articles are greased with a little lard, after being colored they will look much better.— Black is a color for which grease and oils are much used to give it depth and beauty. Cotton, worsted, silk, and other fabrics dyed black are much improved by a liberal supply of olive oil. Black leather is also improved in appearance by it. By staining ivory hi spots or streaks, with a strong solution of the sulphate of iron, then drying it, and afterwards boiling it ia a strong solution of logwood, the ivory will be colored in light and dark streaks or spots. For all colors except black, the articles of ivory to be dyed should be washed well so as to remove all grease from their surface. PURPLE.—This color can be produced on ivory by boiling the article or articles in a solution of logwood, a few drops of the chloride of tin and some cream of tartar. Alum will answer in place of the tin liquor, but it will not make such a beautiful color. Ivory should be boiled but a short period at once for any color, and should receive a number of dips as described for the red. YELLOW.—Some turmeric and alum boiled together will dye a good yellow; but it easily fades in the sun. Fustic and alum makes a more permanent but a less brilliant color. Quercitron bark and the chloride of tin will also dye a yellow. GREEN—May be colored with the sulphate of indigo and rustic. BI.DE—May be dyed with the sulphate of indigo alone; if first boiled in a weak solution of the nitrate of iron, then washed, and after. wards boiled in a solution of the prussiate of potash made slightly sour with sulphuric acid, a more beautiful blue will be produced. This color will be rendered very deep and dark if some logwood liquor is added along with a few drops of the chloride of tin. The logwood liquor is obtained by boiling some logwood chips for an hour, and then throwing away the chips. All the drugs and dyestuffs mentioned can be obtained at any respectable druggists store. The amount of each stuff to produce the colors is not specified, nor is there any necessity for so doir... I*?': the color of the boiling liquid in the vessel guide the person who wishes to dye his ivory, beiore he puts in his articles, us to the depth of shade he desires to prod ace, aw; h: will not go far wrong. Care and attention with what we have said, will enable any rson to color ivory.