TY - JOUR T1 - On the Optical Phenomena of Certain Crystals JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 127 SP - 25 EP - 27 PY - 1837/01/01/ UR - http://dx.doi.org/10.1098/rstl.1837.0005 M3 - doi:10.1098/rstl.1837.0005 AU - Talbot, H. ER -