TY - JOUR T1 - Studies in Heredity. II.-Further Experiments in Crossing British Species of Sea-urchins JF - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934) VL - 87 IS - 594 SP - 240 EP - 245 PY - 1914/01/01/ UR - http://dx.doi.org/10.1098/rspb.1914.0008 M3 - doi:10.1098/rspb.1914.0008 AU - MacBride, E. ER -