TY - JOUR T1 - On a New Case of the Interference of Light JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 138 SP - 213 EP - 226 PY - 1848/01/01/ UR - http://dx.doi.org/10.1098/rstl.1848.0015 M3 - doi:10.1098/rstl.1848.0015 AU - Powell, B. ER -