Copy letter from Robert William Frederick Harrison to the Librarian, Institut Oceanographique, Musee de Monaco 'Prof ManBrides' paper "Development of Echinues esculentus" was published in Phil[osophical] Trans[actions], Vol, 195. The paper was issued in separate form:- Trans B, no 212, and can be had of Messrs Dulai & Co, 37 Soho Square, London, W, price eight shillings.' 9 December 1912