Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to E. J. Crane Esquire, Editor of the Chemical Abstracts; Ohio State University, U.S.A. Informs Mr. E. J. Crane that the 'Philosophical Transactions' of the Society was begun in 1665 and has continued almost without a break up to present time. Notes that no changes have been made to its name or general character, and a collective index was published in 1780 and in 1820. 21 June 1921