TY - JOUR T1 - Experimental Researches on the Conductive Powers of Various Substances, with the Application of the Results to the Problem of Terrestrial Temperature JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 147 SP - 805 EP - 849 PY - 1857/01/01/ UR - http://dx.doi.org/10.1098/rstl.1857.0038 M3 - doi:10.1098/rstl.1857.0038 AU - Hopkins, W. ER -