TY - JOUR T1 - On a Static Method of Comparing the Densities of Gases JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 77 IS - 520 SP - 542 EP - 545 PY - 1906/06/21/ UR - http://dx.doi.org/10.1098/rspa.1906.0047 M3 - doi:10.1098/rspa.1906.0047 AU - Threlfall, R. ER -