turpentine carefully poured off into a clean vessel, and the sediment thrown away. The turpentine in time will become thick oil. Keep the bottle containing the spirits of turpentine tight corked, to prevent evaporation, and wrap a rag several times around the neck, just below the cork, to absorb the exudation's, and prevent the bottle from becoming sticky and unpleasant to handle.
It is equally expedient to have the essential oils also fresh. In this condition they are in a think, fluid state, and dry well. When ole, they be come greasy and unfit for use. This defect may in a measure be overcome be adding alcohol, but it is much better to have the oil fresh.
While spirits of turpentine, lavender , clove, and anise oils are almost colorless when fresh, they become dark when exposed to the light for any considerable time.
Tar-oil, on the contrary, is dark to begin with, and lends a slight tinge if itself to the color, Which, however, only last till it is fired. No one need be disturbed by this apparent change of tint, and it is a very pleasant and manageable medium with which to work.
The number of "painting-mediums" and "tinting- oils" and other "mixtures" on the market is legion. While perhaps none are absolutely bad, some may be better than others. They generally
