R Institution | 1 June 1842
My dear Sir
Mr. Geo Buchanan of Edinburgh tells me he has sent up for next Saturday night1 an apparatus for finding cisterns with water by a mercurial valve2 & writes me to see it is in order. If I call on Friday3 will you give me leave to see it?
Ever Truly Yours | M. Faraday
C. Manby Esq | &c &c &c
Please cite as “Faraday1400,” in Ɛpsilon: The Michael Faraday Collection accessed on