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Document number: 6550
Date: 12 Jan 1852
Recipient: TALBOT William Henry Fox
Author: WHEATSTONE Charles
Collection: British Library, London, Manuscripts - Fox Talbot Collection
Collection number historic: LA52-2
Last updated: 1st August 2010

[blind stamp:]
Lower Mall
Hammersmith <1>
Jany 12th 1852

My dear Sir

I have no objection to make the affidavit <2> in the general terms you mention; but it appears to me that it would be necessary to show that the parties against whom you proceed have actually infringed the processes described in your patents; in this case it would be much better to have the affidavits of practical chemists who are accustomed to patent trials as Prof Brande, <3> Prof. Miller <4> of King’s College or Prof. Graham. <5> I shall be at the Atheneum <6> on Wednesday next at 5 o’clock, perhaps I may see you there.

Yours very truly
C. Wheatstone

H. F. Talbot Esqr


1. London

2. This was an affidavit in the trial of the calotype patent, Talbot v. LaRoche. WHFT called on a number of friends and colleagues to supply such affidavits, but in the end printed the ones from Sir David Brewster and Sir John Herschel.

3. William Thomas Brande (1788–1866), chemist & author

4. Professor William Allen Miller (b. 1817), physician & chemist

5. Thomas Graham (1805–1869) was professor of chemistry at University College London from 1837–1855.

6. The Athenaeum Club, Pall Mall, London; WHFT was also a member.

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