Paints (To Mix). In mixing paints, observe that for out-door work you must use principally, or wholly, boiled oil, unless it be for the decorative parts of houses, etc, then mix as for in-door work. For in-door work use linseed-oil, turpentine, and a little "driers," observing, that the less oil, the less will be the gloss; and that for "flatted white," etc., the colour, being ground in oil, will scarcely require any further addition of that article, as the object is to have it dull. The best "driers" are ground litharge and sugar of lead; the former for dark and middle tints, and the latter for light ones. (To Remove the Smell of Paint, see p. 35.)