TY - JOUR T1 - On the Reversal of the Lines of Metallic Vapours. No. IV JF - Proceedings of the Royal Society of London (1854-1905) VL - 28 SP - 352 EP - 358 PY - 1878/01/01/ UR - http://dx.doi.org/10.1098/rspl.1878.0140 M3 - doi:10.1098/rspl.1878.0140 AU - Liveing, G. AU - Dewar, J. ER -