260 CHEAP OIL PAINTS* 



Which produces • • £67 1 

 Deduct the expense" '43 5 



£23 16 profit. 



To prepare the Vinegar for the Oil. 



Vinegar with Into a cask which \vill contain about forty gallons, put thir* 



s'lil^^hare^of^ ty-two gallons of good common vinegar; add to this twelve 



zinc, is a^-ita- pounds of litharge, and twelve pounds of white copperas in 



st-d^'^ithfish po^v*^*^*' y '^""g "P ^^^® vessel, and shake and roll it well twice 



oil. Jtt-ms a day for a week; when it will be fit to put into a ton of 



pai^^tei^^o- ^"^ virhale, cod, or seal oil; (but the Southern whale oil is to be 



|9wis. preferred, on account of its good colour, and little or no smell) 



shake and mix all together, when it may settle *ntil the next 



day; then pour o(f the clear, which will be about seven-eights 



of the whole. To this clear part add twelve gallons of linseed- 



pil, and two gallons of spirits of turpentine ; shake them well 



together, and after the whole has settled two or three days, it 



will be fit to grind white-lead, and all fine colours in ; and, 



when ground, cannot be distinguished from those ground in 



linseed-oil, unless by the superiority of its colour. 



If the oil is wanted only for coarse purposes, the Unseed-oil 

 and oil of turpentine may be added at the same time that the 

 prepared vinegar is put in, and after being well shaken up, is 

 fit for immediate use without being suffered to settle. 



The vinegar is to dissolve the litharge, and the copperas ac- 

 celerates the dissolution, and strengthens the drying quality. 



The residue, or bottom, when settled, by the addition of 

 half its quantity of fresh lime-water, forms an excellent oil for 

 inixing with all the coarse paints for preserving outside work. 



Note. — All colours ground in the above oil, and used for in- 

 side work, must be thinned with linseed-oil and oil of turpen- 

 tine. 



^ The oil mixed with lime-water, I call incorporated oiL 



The 



