2733. Artists' Drying Oil

2733.     Artists' Drying Oil. Mix nut or pale linseed oil with about an equal measure of snow or powdered ice, and keep it for 2 months at a freezing temperature.

2734. Boiled Oil Specially Adapted for Zinc Paint

2734.     Boiled Oil Specially Adapted for Zinc Paint. Mix 1 part binoxide of manganese, in Coarse powder, but not dusty, with 10 partsnut or linseed oil; keep it gently heated and frequently stirred for about 30 hours, or until the oil begins to turn reddish. The oil thus prepared will also answer for any paint.

2735. New Drying Oil without Boiling

2735.  New Drying Oil without Boiling. Mix with old linseed oil (the older the better), 2 per cent, of its weight of manganese borate (this salt is readily prepared by precipitating a solution of sulphate of manganese with a solution of borax, wash the precipitate, and dry it either at the ordinary temperature of the air or at 100°), and heat this mixture on a water-bath; or, if you have to work with large quantities, with a steam-bath to 100°, or at most 110°; you thus obtain a very excellent, light-colored, rapidly drying oil; by keeping the mixture stirred, that is to say, by always exposing fresh portions to air, the drying property of the oil is greatly promoted. The rapidity of the drying of the oil after it has been mixed with parut, on surfaces besmeared therewith, does not simply depend upon the drying property of the oil, but, in a very great measure, upon the state of the atmosphere - viz., whether dry or moist, hot or cold - the direct action of sunlight, and the state of the surfaces on which the paint is brought. Really genuine boiled linseed oil, if well prepared, leaves nothing to be desired as regards rapidity of drying, but it is retarded by various substances which are added in practice, among which, especially, oil of turpentine is injurious.

2736. Dryers for Dark-Colored Paints

2736.       Dryers for Dark-Colored Paints. This is prepared by grinding the best litharge to a paste with drying oil. A small portion is beaten up with the paint, when mixing with oil and turpentine for use.

2737. Dryers for Light-Colored Paints

2737.      Dryers for Light-Colored Paints. Sulphate of zinc, or sugar of lead, mixed with drying oil, and used in the same way as the litharge in the last receipt.

2738. Dryers for White Paint

2738.    Dryers for White Paint. Mix 1 pound each sulphate of zinc and sugar of lead, with 2 pounds pure white (carbonate of) lead, and apply as in the last receipts.

2739. Patent Dryer

2739.   Patent Dryer. Mix the following ingredients to a paste with linseed oil: 15 pounds dry sulphate of zinc, 4 pounds sugar of lead, and 7 pounds litharge. The mixture , should be passed 3 or 4 times through a paint mill. "When a tin of this is in use, the surface should be always smoothed down level, and kept covered with a thin layer of linseed oil.

2740. Dryer for Zinc White

2740.    Dryer for Zinc White. Mix together thoroughly 10 parts each sulphate of manganese, acetate of manganese, and sulphate of zinc, with 143/4 parts zinc white. An addition of 2 or 3 per cent, of this dryer to zinc white oil paint will make it dry hard.

2741. To Make Japan Dryer

2741.    To Make Japan Dryer. Into 1 gallon linseed oil, put 3/4 pound gum shellac; 1/2 pound each litharge, burned umber, and red lead; and 6 ounces sugar of lead. Boil together for 4 hours, or until all the ingredients are dissolved. Remove from the fire and add 1 gallon spirits of turpentine.

2742. Cheap Japan Dryer

2742.    Cheap Japan Dryer. Mix together 4 gallons pure linseed oil; 4 pounds each litharge and red lead; and 2 pounds powdered raw umber. Boil slowly for 2 hours, add by degrees 71/2 pounds shellac, and boil 1/2 hour longer; when well mixed, add by degrees 1 pound powdered sulphate of zinc, and when nearly cold mix in thoroughly 7 gallons spirits of turpentine.

2743. To Make Paint Dry Quickly

2743.    To Make Paint Dry Quickly. To make paint dry quickly use a large proportion of Japan varnish in mixing.

2744. Massicot

2744. Massicot. Yellow protoxide of

! lead. The dross that forms on melted lead exposed to a current of air, roasted until it acquires a uniform yellow color. Used as a pigment, and in glazing. (Cooley).