To produce this the colors are thrown on in the following order, black, light-blue (two parts water, one part Oriental blue,) Indian yellow, pink, light red, gall water, and, finally, the body color, composed of one part black and two to three parts sprinkling water according as the demand is for a lighter or darker body color. Throw the colors on the same as in producing the grey marble, (see marbled edges) and when the ground color is thrown on draw the marble into snails and take off. THE DARK BLUE SNAIL MARBLE. To all the dark marbles, which should have an especially brilliant effect, and are adapted for light-colored bindings, there is always added one or two parts of a solution of shellac and ammonia to the body color, in addition to sprinkling water. To produce this marble take black, light brown, light blue, (one part Indigo, two parts white,) lemon yellow, gall water and the body-color, which consists of two parts Indigo, one part black, from one to two parts sprinkling water and the same quantity of shellac-ammonia solution. After everything is thrown on the snails are formed. THE DARK-RED SNAIL-MARBLE. This marble has a beautiful effect and is especially adapted for fine half bindings with light-colored leather backs and corners and end papers of the same pattern as the edges. To produce this the colors are thrown on in the following order, black, light red, pink, light gray, (four parts white, one part black,) gall water and the body color consisting of two parts of carmine lake, one part of black and two parts of sprinkling water and shellac-ammonia solution. After throwing on the ground color the snails are drawn. THE GRAYISH-GREEN SNAIL-MARBLE. To produce it the colors are thrown on in the following order, black, claret red (two parts carmine lake and one part of black well mixed,) pink (ten parts of white and one part of scarlet red) gall-water which forms the white veins, and, finally, the body color, which consists of one part of black, three parts of sprinkling-water and an addition of green according to what shade of green is desired. GENERAL REMARKS UPON DRAWN MARBLES. GENERAL REMARKS UPON DRAWN MARBLES. All marbles that are drawn by the stylus or knitting-needle are, in their treatment, more or less similar to the comb-marble, therefore the way to produce them is similar to that described in the former article upon comb-marbles. To produce a pretty coloring, it is unavoidable, to use those four colors which I have named in the former article on comb-marble. If it is desired, to use more colors than the four named, greater perfection in marbling is essential and it takes a perfect practical marbler to achieve beautiful products with eight colors, but practice and a zealous heart will even overcome these difficulties. The lustre of the colors is due to their combination, according to their power of spreading out and to their harmony.