Peter Henry Berthon to Faraday   28 January 1858

Trinity House, London, E.C. | 28th. January, 1858.

Sir,

I am directed to transmit to you the accompanying sample of Red Lead which Messrs. Pilcher propose to provide for the Service of this Corporation, and as it is important that the best Red Lead should be supplied, I am directed to request you will subject it to such analysis as shall determine the genuineness of the Article.-

I am, | Sir, | Your most humble Servant, | P.H. Berthon

Michael Faraday Esq. D.C.L. | &c. &c. &c.