Faraday to Hamilton George Edward Earle   9 September 1857¹

[Royal Institution embossed letterhead] | 9 Sept. 1857

Sir

If a tube were so full of fog as that you could not see through it I do not expect that a current of electricity would convert the fog into water: I should think you might glaze the ends of your tube so well as that fog should not get into it in an injurious degree in any moderate time.

I believe the proposition to observe the compass placed above has been already made[.]

Do not quote my name [in] any way in reference to your plan[.]

I am Sir | Your Obedient Servant | M. Faraday

Lieut. Earle R.N | &c &c &c

Address: Lieut Earle RN. | &c &c &c | 12 Downing Terrace | Cambridge