Yours, &c.,
C. Mason, Commissioner.
James A. Cutting, 142 Hanover st.; Boston, Mass.
United States Patent Office, June 22, 1854.
Sir: By reading a paper by Mr. W. Crookes in the "Journal of the Photographic Society, London," No. 7, p. 86, "on the employment of bromine in collodion," it is believed you will be satisfied that the date there given on which he used bromized collodion is prior to your claim to having used it; he refers to p. 72, No, 6, published in June, 1853, for experiments made with bromized collodion, which paper is dated June 2d, 1853. Mr. Isaac Rehn, of Philadelphia, has testified to having seen you make use of a bromide base, viz., bromide of potassium and collodion, about the 1st of July, 1853, or about one month after the date of Mr. Crookes' paper in England. The specification is accordingly returned, that you may cancel the fourth claim, and amend the papers to suit.
Yours, &c.,
C. Mason, Commissioner.
Mr. J. A. Cutting, (care of C. G. Page), Washington, D. C.