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Document number: 7052
Date: 02 Nov 1854
Recipient: TALBOT William Henry Fox
Author: GROVE William Robert
Collection: British Library, London, Manuscripts - Fox Talbot Collection
Collection number: envelope 21160
Collection number historic: LA54-55
Last updated: 9th July 2010

Nov 2 / 54

Dear Talbot

I am very much obliged by your thinking of me apropos of the coil apparatus <1> – I have tried the function of coils with one of Gassiots <2> & also with a small one of my own but the effects are not increased or only to a very slight degree – Gassiot has a large one made double the size of mine but the effects are not greater; it seems the insulation only suffices for a certain power & that for an increased power a new system of circulation is requisite.

Yours very truly
W R Grove

[envelope:]
H. F. Talbot Esqre
&c &c
Laycock Abbey
Wiltshire

Notes:

1. Perhaps one of Talbot’s electro-magnetic machines; he took out patents for various types in 1840, 1845 and 1846.

2. John Peter Gassiot (1797–1877), merchant & electro-chemist.

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