TY - JOUR T1 - On the Passage of Rontgen Rays through Gases and Vapours JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 82 IS - 552 SP - 103 EP - 127 PY - 1909/03/10/ UR - http://dx.doi.org/10.1098/rspa.1909.0011 M3 - doi:10.1098/rspa.1909.0011 AU - Crowther, J. ER -