Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Director of the Senckenbergische Naturforschende Gesellschaft, Frankfurt Informs the Director that the Society have not yet resumed sending their publications to Germany, however, as they have requested that exchange be resumed, he is giving instruction to have all volumes of the biological publications published during the war sent to them. Hopes the Director will consider their 'Philosophical Transactions B' and 'Proceedings B' an adequate exchange for the publicaitons of the Director's Society. 21 March 1921