The colors used are scarlet-red, bluish-green and gall water, the latter representing the white, this network of veins comes out excellently from the dark ground-tone. The scarlet-red color is first taken and must spread out in a like way, as the black in the other two marbles. Then follows bluish-green and gall-water and finally the body color is added. The latter makes a special preparation necessary. Take 3/5 of an ounce of ivory-black add 1/6 of an ounce of a thick solution of gum, grind the whole mixture with a mixture of shellac-ammonia which has been diluted with a little water. If the color is ground perfectly fine it is diluted with the solution of shellac-ammonia and is ready for use. Should it not be powerful enough to force the colors into veins, a few more drops of gall must be added. This body color is likewise thrown on by the aid of the large bristle brush as all other body colors. As beautiful as this kind of marbling may be, there is a disadvantage in its use as the body color must always be newly prepared, because on the second day after standing it curdles, and cannot be used any more. THE BLUISH-GRAY MARBLE. By mixing the colors very beautiful effects may be obtained. One of these fine marbles is the bluish-gray. To prepare it the following mode is used; claret red (2 parts carmine-lake and 1 part black) and as body color, Oriental blue mixed with black and sprinkling-water. GRAY MARBLE WITH A NET OF COLORED VEINS. To produce this the following colors are used; black, yellow, cinnabar-red or Indian-red, Oriental blue and gall water and finally the gray body color. The colors are put on in the following way; first black with the brush into a ribbon-like form, then yellow is squirted on in small drops by means of a broom-corn whisk, then follow red, blue and gall water which are treated like yellow, and finally, the body color is squirted on by the aid of a whisk or the large brush. The latter forces the colors by its great spreading power into beautiful veins, after which the edge can be taken off. The body color consists of 1 part black and 2 parts sprinkling water. THE GRAYISH GREEN MARBLE. This is one of the most beautiful specimens of marble and according to the shading of the body color most beautiful effects can be produced by it. The following colors are used to produce it; black, carmine-red (1 part carmine lake and 1/2 part black), gray (1 part black and 10 parts white), finally gall-water and the body color. The mode of producing it is the same as described before. The body color consists of 1 part black, 2 parts of sprinkling water and as much green as is necessary to produce the desired shade. Before adding sprinkling water to the body color, black, only so much gall is added that it will but slightly push the different colors thrown on. HAIR MARBLE. THE HAIR MARBLE. (SEE SPECIMEN PLATES.)