Faraday to John Stevens Henslow   22 November 1853

R Institution | 22 Novr. 1853

My dear Henslow

so 1958 vols of mixed O & H make 1 vol of water and therefore your middle line of 1 : 2 gives or requires 1/653 in the water column. The 9 as equivalent for water is right i.e the 9 which you have? opposite

is right¹[.]

Ever Truly Yours | M. Faraday

Revd. J.S. Henslow | &c &c &c