TY - JOUR T1 - Note on a Discovery, as Yet Unpublished, by the Late Professor F. M. Balfour, concerning the Existence of a Blastopore, and on the Origin of the Mesoblast in the Embryo of Peripatus Capensis JF - Proceedings of the Royal Society of London (1854-1905) VL - 34 SP - 390 EP - 393 PY - 1882/01/01/ UR - http://dx.doi.org/10.1098/rspl.1882.0054 M3 - doi:10.1098/rspl.1882.0054 AU - Moseley, P. AU - Sedgwick, A. ER -