Copy letter from Joseph Larmor, to Professor Walter Frank Raphael Weldon, Fellow of the Royal Society Larmor encloses Hurst's paper with the addition printed on Weldon's. He thinks this requires an explanation, as indicated after the title. He sends these to gain Weldon's assent as Chairman of the Zoology Committee for its publication, and to ensure that the publication of these two papers will conclude the matter as far as Proceedings of the Royal Society is concerned. 1 February 1906