Dutch Marble -This is one of the oldest, and, at the same time, one of the most difficult patterns (Figs. 102 and 103), and is performed by a process very different from any of the preceding. If you examine a sheet attentively, you will perceive that the colors are not scattered here and there in an indiscriminate manner, but follow each other in a kind of regular succession in a diagonal direction across the sheet, the red being the preponderating color.

In order to do this well, your colors must be particularly well ground and of the first quality, and they ought to be mixed a few days before using.

You will require a number of little tins or pots, 1 1\2in. wide and about the same or 2in in depth. You will also require two frames the size of the paper you intend using, with wooden pegs in them, slightly tapering, about tin. in thickness, and fixed about 3in apart, at regular distances over the whole extent of the space required. Your colors will be all the better for this class of work by the addition of a little spirits

of wine; with this exception, the colors will not require any different treatment from the Nonpareil.

Mix each of your colors in a large jug having a spout, so that you may be able to pour them out of that into the small tins before mentioned. The colors required will be red, yellow, green, blue, and white. The two frames of pegs must be made exactly alike, so that if the pegs in one frame make an impression in a sheet of paper, the pegs in the other fit exactly in the sames pots.

Having mixed the colors in your large pots, and tried them by dropping a little of each on the solution in the trough, you proceed to fill as many of your little pots of color as you may require, and arrange them in the following order, about 3in apart, so that the pegs in the above-mentioned frames may drop into the centre of each pot, and, when lifted out (which will require to be done with great caution), will convey one large drop of color on each peg, with which you gently and evenly touch the surface of the size, taking care that you do not put them too deep, but, at the same time, being quite sure that they all do touch.

The tins or pots of color must be arranged as in the following diagram, about 3in. apart:

I have put only the initial letters of the colors to be in this lot of pots, G standing for green, Y for yellow, and B for blue. You must now fill the same number of tins or pots with white, which must be composed of pipeclay ground and prepared as the other colors, and arrange them in precisely the same manner, using the second or duplicate frame of pegs to them.

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