TY - JOUR T1 - Negative After-Images and Successive Contrast with Pure Spectral Colours JF - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934) VL - 87 IS - 594 SP - 190 EP - 191 PY - 1914/01/01/ UR - http://dx.doi.org/10.1098/rspb.1914.0001 M3 - doi:10.1098/rspb.1914.0001 AU - Porter, A. AU - Edridge-Green, F. ER -