Copy letter from Robert William Frederick Harrison to Le Directeur, Le Chimiste, Berchem-Ste-Agathe, Brussels 'Dear Sir, I have to acknowledge the receipt of your letter of May 24, and to say it shall be laid before the Secretaries, but I fear there is not much prospect of our establishing an exchange, for the reason that Le Chimiste is a journal of technical and applied chemistry, and we are compelled to confine our accessions to the Library, as far as possible, to pure science.' 28 May 1910