Faraday to H. Duckworth   25 July 1855¹

[Royal Institution embossed letterhead] | 25 July 1855

Sir

Each one has to judge for himself (in the case you speak of) from the evidence given. My conclusion is that the mite had nothing to do with the Galvanic action but got in by accident[.]

I am Sir | Your Obedient Servant | M. Faraday

H. Duckworth Esqr | &c &c &c