Faraday to William Thomson   28 October 1859

[Royal Institution embossed letterhead] | Albemarle St. W | 28 Octr 1859.

My dear Thomson

I have received by post a number of diagrams - apparently lines of magnetic force with transverse lines - perhaps lines of direction of motion - but there is no explanation of their particular object - nor any note with or about them - Are they from you? I have a vague notion that you spoke to me about some such thing but have forgotten all about it[.]

Is your delicate static electrometer manufactured yet? and if so what is the price of a most delicate one?- It ought to be visible at a distance. If we require one can you order its making?

I think I heard you speak of some other electrometer employed by Dellman¹ & another employed in the investigation of Ohm’s² law - or am I mistaken[?]³

Ever Truly Yours | M. Faraday