Paper, 'On the uterine villiform papillae of pteroplataea micrura, and their relation to the embryo' by J Wood-Mason and A Alcock The authors write: 'That in the females of several Selachioids and Batoids the mucous membrane of the terminal portion of the oviduct, or uterus, is provided with glandular structures which secrete an albuminous fluid destined in some way or other for the nourishment of the developing empryo is a bionomic phenomenon which has attracted the attention numerous physiologists and histologists, though, as far as we are aware, it has never been fully followed out.' Annotations in pencil and ink. Includes two plates of anatomical figures. Subject: Physiology / Embryology Received 24 February 1891. Read 19 March 1891. Communicated by Michael Foster. A version of this paper was published in volume 49 of the Proceedings of the Royal Society as 'On the uterine villiform papillæ of pteroplatœa micrura, and their relation to the embryo, being natural history notes from H. M. Indian marine survey steamer ‘Investigator,’ Commander R. F. Hoskyn, R.N., Commanding. No. 22'. 1891