We must advise all who are interested in dry processes to obtain Mr. Long's clearly written pamphlet. (Leader, July 15th, 1857.)
Extract from Proceedings of Charlton Photographic Society, October 8th, 1857. Paper by Mr. Hooper,—On the results of his experience in the practice of several Preservative Processes.
I commenced experimenting on the process of Mr. Long. The success I have met with from the first has convinced me that that process will ere long be generally adopted: the plates being easily and quickly prepared, and keeping well, is a great advantage.
Extract from Letter from G. R. Smith, Esq., to the Editor of the London Photographic Journal, Sept 21, 1857.
My tour of a fortnight's duration having ended, I returned to London, and began developing (the dry plates). To my great delight, I found all Mr. Long had said in favour of his process fully realized. Picture after picture (I took twenty-eight) came out with great beauty, and so far as the process is concerned, I have not had a single failure.
Mr. Long's Dry Collodion Process.
Letter from Robert Hunt, Esq., F.R.S., to the Editor of the London Photographic Journal, October, 1857.
6, Green's Row, Chelsea.
Sir,—It is due to Mr. Long that I should state what my experience has been with his dry collodion plates, and I feel much satisfaction in doing so, being enabled fully to confirm all that Mr. Smith has said respecting the dry plates prepared as he has described (Photo. Journ. Sept. 21). On the 26th of August, Mr. Long, at my request, furnished me with some of his dry collodion plates. Absence from London, and the press of official engagements, prevented my trying any experiments with those plates until the 30th of September. Although the weather was very unfavourable, the result was superior to my expectations. On the 7th of October, at four in the afternoon, when the sky was covered with clouds and the weather stormy, I exposed a plate in the camera obscura for ten minutes to the dark brick building, Chelsea Hospital. I enclose you a positive print from the result of this experiment. When we remember that the sensitive plate had been kept by me for a period of forty-two days, and then exposed under very unfavourable circumstances, I think you will admit that the result is satisfactory. I should not content myself with this trial, but that I am again compelled to leave London for a long period, and I shall have no other opportunity of testing these plates for this year. I feel convinced that the traveller might with perfect safety use plates which have been prepared for a month, and thus relieve himself from much labour and frequent annoyance, by the use of Mr. Long's process.