Faraday to William Pigott   9 March 1865

Royal Institution | Albemarle St | 9 March 1865

Sir

Two specimens of white lead accompanied the five samples of red lead already reported to Mr. Berthon¹. These two samples were labled [sic] No.1. Pontifex & Wood and No.2. S & W Tudor: and were both called white lead in the letter. The first labled Pontifex & Wood was of the ordinary character and as ground white lead contained no adulteration but the second labled Tudor differed from it, in containing mixed with it a preparation other than carbonate of lead and the same I believe with Pattinsons² Oxychloride of lead I hesitate to call this an adulteration or to give an opinion upon it. I believe it to be an article manufactured & sent into the market in competition with White lead both as to quality & price I have heard also that it is as good but am not an adept or artist & therefore decline giving an opinion. It was called white lead in the letter but was distinguished as a sample of paint by a lable [sic] on the specimen³[.]

I am Sir | Your Very Obedient Servant | M. Faraday

The Deputy Master