TY - JOUR T1 - On the Division of a Sound-Wave by a Layer of Flame or Heated Gas into a Reflected and a Transmitted Wave JF - Proceedings of the Royal Society of London (1854-1905) VL - 22 SP - 190 EP - 191 PY - 1873/01/01/ UR - http://dx.doi.org/10.1098/rspl.1873.0025 M3 - doi:10.1098/rspl.1873.0025 AU - Cottrell, J. ER -