I regret much that I am obliged to leave London on the 24th in order to write a Review, which I can only do at home, and which will occupy every moment of my time till the 2nd week of July. Under other circumstances I shd have remained in London till the 1st of July; but your case <1> cannot depend upon oral evidence, because your Counsel can read the affidavits as parts of his speech.
I am Ever Most Truly yrs
June 15th 1854
1. In 1852 Talbot had thrown open his photographic patents as far as amateur photography was concerned, though he retained them regarding professional portraiture. He won several injunctions against professional portrait-photographers who infringed them, and in 1854 he sought to obtain another against James Henderson, a professional photographer who took portraits using the collodion process. Brewster and Sir John Frederick William Herschel (17921871), astronomer & scientist made affidavits for Talbot. Later in the same year, and before the Henderson case was concluded, he failed to obtain an injunction against another portrait-photographer, Martin Laroche, who, he claimed, had infringed two important elements of his patents. [For an account of these significant cases, and the opposition to Talbots patents, see H. J. P. Arnold, William Henry Fox Talbot: Pioneer of Photography and Man of Science (London: Hutchinson Benham, 1977), pp. 198209.]
2. The Athenĉum and (London) Literary Chronicle, London.