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Document number: 6588
Date: 05 Apr 1852
Recipient: TALBOT William Henry Fox
Author: THOMAS Robert W
Collection: British Library, London, Manuscripts - Fox Talbot Collection
Collection number historic: LA52-18
Last updated: 28th November 2012

[headed notepaper:]
10. Pall. Mall. London.

Apl 5th 1852

To
H F Talbot Esqr

Sir

I am requested by Mr Henneman to forward you 4oz of the Hypo Iodide of Silver and which I think you will find the best preparation for taking portraits on glass the time varies from 2 to 10 seconds but the temperature of the room in which the processes are conducted should not be less than 70 F.

Yours respectfully
Richd W Thomas