19. Park Crescent,
Portland Place. W. 1
June 25. 1866
My dear Sir
I am making some experiments in Electro-magnetism, and the large circular flat Electro-magnet made for my Patent of 1841 2 would be very useful to me to verify some of the results. If it be still in your possession I will ask you to lend it to me, and it shall be returned whenever you wish it.
Yours very truly
C. Wheatstone
H. F. Talbot EsqrPlease cite as “TALBOT445,” in Ɛpsilon: accessed on