TY - JOUR T1 - Croonian Lecture, 1906: On Nerve Endings and on Special Excitable Substances in Cells JF - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934) VL - 78 IS - 524 SP - 170 EP - 194 PY - 1906/09/03/ UR - http://dx.doi.org/10.1098/rspb.1906.0056 M3 - doi:10.1098/rspb.1906.0056 AU - Langley, J. ER -