TY - JOUR T1 - An Improved Apparatus for Ascertaining the Sensitiveness of Safety-Lamps When Used for Gas-Testing JF - Proceedings of the Royal Society of London (1854-1905) VL - 51 SP - 87 EP - 90 PY - 1892/01/01/ UR - http://dx.doi.org/10.1098/rspl.1892.0011 M3 - doi:10.1098/rspl.1892.0011 AU - Clowes, F. ER -