482 XIII. OILY COMPOUNDS.— 



litharge 3 or 4 oz., ; mix, and let it stand for some time, shaking 

 it often, then pour off.— 5. Nut oil 2lb., water 31b., vitr. albi 

 2 oz. ; boil till nearly all the water is consumed, then expose t;o 

 the sun for some time. — 6. Oil, mix with snow or powdered ice, 

 and keep it from thawing as long as possible ; in two months the 

 oil will have acquired the drying property : used to mix with 

 colours to cause them to dry quickly. 



Painters cream. Nut oil 3 oz., mastich half an oz. ; dissolve, 

 add sacch. Saturn! 5 j, and then water gradually to the consistence 

 of cream ; used by painters to cover their work which they are 

 obliged to leave for some time : when they begin again it is washed 

 off* with a wet sponge. 



Furniture varnish. White wax 8 oz., ol. terebinth. 1 pint. 



Picture varnish, Mastich 12 oz., Scio turp. 2 oz. 5iv, camphire 

 gr. XXX, pounded glass 4 oz., oil of turpentine 3i pints; pour off" 

 the clear: used for oil paintings. — 2. Japanner's copal vainish 

 21b., heat it, and pour it into a mixture of turpentine l^lb., and 

 drying oil half a lb. : it dries slowly, but never chills. 



Gold varnish for leather. Turmeric, gamboge, ana 3Jss, oil 

 of turpentine 2 pints, add seed lac, gum sandarac, ana 4 oz., 

 dragOQ**s blood 5iv, turp. 2 oz., pounded glass 4 oz. : pour off' the 

 clear. 



Copal varnish. Oil of turpentine, thickened by keeping, 8 oz., 

 copal 2t oz. — 2. Oil of turpentine 6 oz., oil of lavander 2 oz., 

 copal 1 oz. 



Japanner^s copal varnish. Copal 41b., melt in a glass matrass 

 till the water is evaporated, as will appear by the vapour con- 

 densed on any cold substance dropping quietly to the bottom ; 

 pour in boiling hot linseed oil 1 pint ; take the matrass from the 

 fire, and mix the varnish while hot with about its own weight of 

 oil of turpentine. 



Transparent japan for tin ware. Oil of turpentine 8 oz., oil of 

 lavander 6 oz., copal 2 oz., camphire 5 j. 



Le Blondes varnish for prints. Balsam. Copaibse 4lb., copal 

 in powder lib. ; add by single ounces every day to the balsam, 

 keeping it in a warm place, or the sun, stirring it often ; when all 

 is dissolved add true Scio turpentine q. p. 



Sheldrake's copal varnish, Ol. terebinth, rectif. veri 1 pint, 

 spir. sal ammon. 2 oz. ; mix, add copal in small pieces 2 oz. : stop 

 the vessel with a cork cut in grooves, bring it quickly to boil, so 

 that the bubbles may be counted as they rise, and keep it at that 

 heat till the copal is dissolved: watch it constantly, for if the least 

 stoppage or over-heating takes place, it is in vain to proceed : then 



