Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to J. Groves Esq.; Trevarthian, Freshwater Bay, Isle of Wight Gives J. Groves permission to reproduce a monograph of his paper written jointly with the late Mr Clement Reid (FRS) ['Preliminary report on the Purbeck characeae'], originally published in the Proceedings Vol. B.89. 18 December 1923