TY - JOUR T1 - On the Colours of Mixed Plates. JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 4 SP - 33 EP - 34 PY - 1837/01/01/ UR - http://dx.doi.org/10.1098/rspl.1837.0007 M3 - doi:10.1098/rspl.1837.0007 AU - Brewster, D. ER -