TY - JOUR T1 - On the Absorption and Radiation of Heat by Gaseous and Liquid Matter. Fourth Memoir JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 154 SP - 201 EP - 225 PY - 1864/01/01/ UR - http://dx.doi.org/10.1098/rstl.1864.0005 M3 - doi:10.1098/rstl.1864.0005 AU - Tyndall, J. ER -