TEMPEttED STEEL. g55 



done at Earl's Court, Kensington, for his Grace the Duke of Painter's co- 

 Richmond, under my superintendance, in 1802-3, was f^l^y ln"d ^*eirri- 

 equal, if not superior to any painting done in the usual way pared with fiultT 

 with linseed-oil, white-lead, &c. I have also the highest opinion ®'^* 

 of your coarse composition and fish-oil you made use of on the 

 out-buildings, fences, &c. on the above premises ; the great body 

 and hard surface it holds out, taust be of the greatest preserva* 

 tion to all timbers and fences, exposed to open air, and all 

 weathers. It must also be of the greatest service on plastered 

 stucco, external walls, &c. 



If any father attestation from me, relative to the business 

 you did at the above premises, can be of any service to you^ 

 you will command, 



Sir, your obedient servant, 



' Jf^est Lavant, W. HILL. 



Feb. 7th, 1805. 



I beg leave here to subjoin a receipt for a constant white for 

 the inside painting of houses ; which paint, though not divested 

 of smell in the operation, will become dry in four hours, and 

 all smell gone in that time. 



White Paint. 

 To one gallon of spirits of turpentine, add two pounds of 

 frankincense, 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 toge- 

 ther and bottle it also. Let any quantity of white-lead be 

 ground with spirits of turpentine very fine, then add a sufficient 

 portion of the last mixture to it, until you find it fit for lay- 

 ing on. If in working it grows thick, it must be thinned with 

 spirits of turpentine. — It is a flat or dead white. 



XIV. 



Letter on the Properties of Tempered Steel. From a Coires* 

 pondent. T. B. 



To Mr. NICHOLSON. 

 SIR, 



JLn one of your Journals, I do not recollect which, you Intersting pro- 

 •' ' ' ■' perties of tei^- 



VoL. XIV. — July, 1806. Mm signified pered st«el. 



