Paper, 'On the influence of iodine, in rendering several argentine compounds, spread on paper, sensitive to light; and, on a new method of producing, with greater distinctness, the photographic image' by Robert Hunt Postscript is dated 19 May 1840. Subject: Chemistry / Photography Published in Philosophical Transactions as 'On the influence of iodine in rendering several Argentine compounds, spread on paper, sensitive to light, and on a new method of producing, with greater distinctness, the photographic image'. Communicated by Sir J [John Frederick William] Herschel. Received by the Royal Society on 13 May 1840. Read 18 June 1840. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 4, 1843. 5 May 1840