R Institution | 20 Mar 1849
Sir
The effect is electric and well known. Schoenbein who discovered the substance in Gun cotton & Collodion as it is usually called pointed it out.
I am Sir | Very Truly Yours | M. Faraday
T.L. Shuckard
Please cite as “Faraday2162,” in Ɛpsilon: The Michael Faraday Collection accessed on