Faraday to Josiah Wedgwood   14 March 1819

Mr Faraday sends Mr Wedgewood the analyses of the Clays and would be obliged if Mr Wedgewood could at a convenient opportunity give him short notices of their localities times of discovery and relative utility¹[.]

Mr Faraday takes the liberty of asking also whether Mr. Wedgewood has any means which are not secret of ascertaining the heat of excellent furnaces[.] Mr Faraday is engaged in some experiments carried on at very high temperatures and feels curious on this point.

Royal Institution | March 14th 1819

The excess is in consequence of the Alumine not having heated sufficiently[.] It was thrown down by accident after the first heating & weighing and before all the matter had been driven off.

March 13. 1819

Address; J. Wedgewood Esq