Peter Henry Berthon to Faraday   10 February 1864

Trinity House, London, E.C. | 10th February 1864.

Sir,

I beg to transmit to you the accompanying seven samples of Red and White Lead, and to request that you will analyse the same and be good enough to favor me with the result, for the information of the Elder Brethren.

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

M. Faraday Esq. | &c &c &c | Royal Institution.