TY - JOUR T1 - A Comparative Study of the Spectra, Densities, and Melting Points of Some Groups of Elements, and of the Relation of Properties to Atomic Mass JF - Proceedings of the Royal Society of London (1854-1905) VL - 70 SP - 1 EP - 27 PY - 1902/01/01/ UR - http://dx.doi.org/10.1098/rspl.1902.0001 M3 - doi:10.1098/rspl.1902.0001 AU - Ramage, H. ER -