Faraday to George Biddell Airy   4 March 1846

R Institution | 4 March 1846

My dear Sir

I hope you will do me the favour to accept the accompanying two pieces of heavy glass. I can lend you more if on any occasion you should have need of a greater length[.]

Ever Truly Yours | M. Faraday

G.B. Airy Esq | &c &c &c