Please send to Messrs Whittaker & Co 2 White Hart Street, Paternoster Squarem E.C. electros of Plates 8 and 19 in the Paper by Sir William Huggins on the Spectra of Radium (Vol. 72 of "Proceedings" [Proceedings of the Royal Society]) - those to be ^charged^ to the account of Messrs Whittaker.
I am, faithfully yours,
Robt [Robert] Harrison
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.