TY - JOUR T1 - On Heat Conduction in Highly Rarefied Air JF - Proceedings of the Royal Society of London (1854-1905) VL - 31 SP - 239 EP - 243 PY - 1880/01/01/ UR - http://dx.doi.org/10.1098/rspl.1880.0022 M3 - doi:10.1098/rspl.1880.0022 AU - Crookes, W. ER -