In answer to Mr. Wedgewoods enquiries Mr Faraday begs leave to say that he does not know of any Analysis of the Devonshire Potters clay but he would be glad of an opportunity of making out the proportions of its constituent parts[.]
He is unfortunately also unable to answer precisely the enquiry respecting the Pyrometer. The experiments of Sir James Hall1 are probably in the Edinburgh Philosophical Transactions but Mr. F has not been able to see that book2. His search after some reference to the experiments has as yet been useless but if he can find them in a day or two as he hopes he shall he will inform Mr. Wedgewood.
Royal Institution | Feby. 23rd 1819
Address: J. Wedgewood Esq | York Street
HALL, James (1806): “Account of a Series of Experiments, shewing the Effects of Compression in modifying the Action of Heat”, Trans. Roy. Soc. Edinb., 6: 71-186.
Please cite as “Faraday0096,” in Ɛpsilon: The Michael Faraday Collection accessed on 28 April 2024, https://epsilon.ac.uk/view/faraday/letters/Faraday0096