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Faraday to Jacob Herbert   14 March 1854

Royal Institution | 14 March 1854

My dear Sir

Having this day examined1 one division of a Cata dioptric apparatus constructed by Mr. Chance of Birmingham and compared it with one of French construction which the Corporation possess mounted in the Corporation frame, I am of opinion that in the colour of the glass, the working of the various pieces & the fitting of the whole together the former is equal to the latter: and from the effect upon the screen I believe that one would not be distinguishable from the other when seen at Sea2:

I am my dear Sir | Your Very faithful Servant | M Faraday

Jacob Herbert Esq | &c &c &c

1
See Trinity House By Board, 28 February 1854, GL MS 30010/38, p.450 and 14 March 1854, p.465 for the arrangements for this examination.
2
This letter was read to Trinity House By Board, 21 March 1854, GL MS 30010/38, pp.475-6. It was ordered that a copy of this letter be sent to Chance, with a note that the Elder Brethren agreed with Faraday’s view.

Please cite as “Faraday2809,” in Ɛpsilon: The Michael Faraday Collection accessed on 5 June 2025, https://epsilon.ac.uk/view/faraday/letters/Faraday2809