TY - JOUR T1 - On Combinations of Colour by Means of Polarized Light JF - Proceedings of the Royal Society of London (1854-1905) VL - 22 SP - 354 EP - 358 PY - 1873/01/01/ UR - http://dx.doi.org/10.1098/rspl.1873.0058 M3 - doi:10.1098/rspl.1873.0058 AU - Spottiswoode, W. ER -