tured, but are fluxed to be used in their full strength.
Now, when colors are used in a less degree than full strength, it is obvious they are deficient in this verifiable element, Consequently, the thinner the wash of color, the less the quantity of flux is distributed.
Herein lies the difference between the painting colors and grounding colors ; these latter, being prepared especially to be applied for tinting, -- usually in a delicate wash, -- are abundantly fluxed, and require no additional fluxing. On the contrary, whenever painting colors are to do duty as tinting colors, or to be applied for any other purpose in a faint wash, they must have additional flux thoroughly incorporated with them, and the amount is in exact proportion to the quantity of color use, or rather, the extent of surface over which a certain portion of color is to be distributed.
The direct addition of flux is twofold ; for it not only assist the color to amalgamate to the surface of the china, but gives it that much desired quality of glaze. It is the medium of obtaining the beautiful, brilliant lustre that is so absolutely necessary for perfect work, and without which a painting appears dead, dull, and unfinished, no matter how well executed.
Desirable as it is to have an intelligent compre-
