TALBOT2753

43 Piccadilly
Feby 14^th 1874

Dear Sir

Your letter, ¹ for which please accept my thanks, was duly delivered. I was then on my way to Paris, and it has only just now come to hand – It gave me just the information I wanted: – I was certain I heard the announcement of your own photographic process at the Royal Institution, and I now learn how I heard it from your letter² – I have Calotype prints which I obtained in 1842 at my Uncles place in Berkshire,³ and I am going to use them in comparison with my Autotype ⁴ prints from negatives on plates 48 x 38 inches in evidence of progress – By the way I shall be much obliged if you can give me the exact date in Jany 1839 of the announcement you mention M^r Faraday made: the records of the Institution do not help me with sufficient accuracy⁵

In my lecture I shall naturally share refer to the various processes which led to autotype, and I shall make use of an abstract of M^r Malones lecture at the Royal Institution on the 13^th of Feby 1857: ⁶ – especially of that portion of it which refers to you own engraving process; and as I intend to occupy the library with illustrations of various processes, I shall be much obliged if it should be in your power to give me any assistance

I am Dear Sir Yours faithfully
Vernon Heath

H. Fox Talbot Esqre
F.R.S.