Faraday to Angela Georgina Burdett Coutts 23 May 1861

[Royal Institution embossed letterhead]

Dear Miss Coutts

I had promised myself the great pleasure of paying my respects to you this Evening but I have been attacked for the last two or three days with one of my old fits of giddiness & depressed spirits that I fear I may be unfit to appear[.] But I am ever your obliged & grateful Servant