Margam Park. <1>
March 20. 1844.
My dear Sir,
Many thanks for the description of the Calotype process; which I intend to try instantly, for the prosecution of which I shd be infinitely obliged if you wd order your Chemist to send me a small quantity of the necessary ingredients; for which I will return him a Post Office order.
I fear however that I shall be sure to encounter the besetting blots, unless you describe the means by which you so perfectly avoid them in your last beautiful works, which I therefore trust to your great kindness not to forget to do.
Should you see M. Claudet, <2> he can shew you rather a pretty specimen of Marine Daguerreotyping <3> which I sent him; since however I have tried polishing with oil alone, my plates have become much superior in beauty
believe me yours truly obliged
Calvert R. Jones –
1. Margam Park, Glamorgan: home of Christopher Rice Mansel Talbot.
2. Antoine Françoise Jean Claudet (1797–1867), London; French-born scientist, merchant & photographer, resident in London.
3. Jones was a marine painter and experimented with the Daguerreotype before turning to WHFT's paper processes.