»N MAKING CHEAP OIL PAINtS. 201 



F'liir gallons of fisli-oil, 

 Four <lo. iiic<ji|)()r;Uc(l oil, 

 Four do. linseed-oil. 



Brozvn Red. 



Lime-water, 8 galls. 

 Spanish brown, 112 lbs. 

 Road-dust, 224 lbs. 

 Weight 501 lbs. 



This most excellent paint is scarcely three half-pence per pound. 



The Spanisli brown must be in powder. 



A good chocolate color is made by the addition of bhie-black in 

 powder, or lamp-black, till the color is to your mind ; and 



Jl light brown may be formed by adding ground white-lead. 



Note. — By ground-lead is meant white-lead ground in oil. 



Yellow is prepared with yellow-ochre in powder, in the same 

 proportion as the Spanish brown. 



Black is also prepared in the same proportion, using lainp-bb.ck, 

 or blue-black. 



To Whiten Linseed Oil, 



Take any quantity of linseed-oil, and, to every gallon, add two 

 ounces of litharge ; shake it up every day for fourteen days ; then 

 let it settle a day or two ; pour off the clear into shallow pans, 

 such as dripping pans, for instance, first putting half a pint of spirit 

 of turpentine to each gallon : place it in the sun, and, in three days, 

 it will be as white as nut-oil. 



This oil, before it is bleached, and without the spirit of turpen- 

 tine, is far superior to the best boiled oil ; there is no waste, and it 

 has no offensive smell. 



Note. — From experiments made, it appears that fine sand will 

 not answer the purposes of road-dust in painting ; and that this dry 

 dust, collected in high-ways much travelled by horses and car- 

 riages, and afterwards finely sifted, is the article recommended, as 

 possessing the properties required. 



I here subjoin a receipt for a constant while, for the inside paint- 

 ing of houses ; which paint, though not divested of smell in the 

 operation, will become dry in four hours, and all smell be gone in 

 that time. 



A Constant White Paint. 

 To one gallon of spirit of turpentine, add two pounds of frankin- 

 cense ; let it simmer over a clear fire until dissolved ; strain it, and 

 bottle it for use. To one gallon of my bleached linseed- oil, add 

 one quart of the above, shake them well together, and bottle them 

 also. Let any quantity of white-lead be ground with spirit of tur- 

 pentine very fine, then add a sutlicient portion of the last mixture 

 to it, until you find it fit for laying on. If in working, it grows 

 thick, it must be thinned with spirit of turpentine. It is a flat or 

 dead white. 



0^ Certificates of the superior excellence of the above paints 

 accompany the original paper. 



[Transartiouf! ofth<- Snrirlijfoy tlif Encouragement of./]rts, ^c. 



2G " Vm>,\. 



