George Biddell Airy to Faraday   15 May 1858

1858 May 15

My dear Sir

I am much obliged by your sending me the specimens of silver watch glasses¹. I suppose that this process has something in common with that about which I was inquiring, but it is not in all respects the same. As I understand, in the process applied to telescopes, in order to form a concave mirror (for instance) the silver is deposited on the concave side of the glass. It is, as I understand, pure metallic silver; and its polish is given, not by the polish of the glass, but by subsequently rubbing the exposed silver.

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I am happy to hear that you have received a suburban location which pleases you.

I am, my dear Sir, | Yours very truly | G.B. Airy

Professor Faraday | &c &c &c