William Crane Wilkins to Faraday   25 April 1864

24 & 25, Long Acre, | London | W.C.| 25th Apl. 1864

Sir

In reply to your note I beg to inform you we will be ready for you tomorrow evening.

We herewith send you the Section of the present apparatus as in the Lantern you will please to observe we have made an improvement in these by 2 additional prisms 1 at top and 1 at bottom viz 6 at top and 4 at bottom[.]

I have the honor | to be | Sir | Your Obedient Servant | W.C. Wilkins

M. Faraday Esquire | &c