TY - JOUR T1 - An Experiment in Search of a Directive Action of one Quartz Crystal on Another JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 192 SP - 245 EP - 256 PY - 1899/01/01/ UR - http://dx.doi.org/10.1098/rsta.1899.0005 M3 - doi:10.1098/rsta.1899.0005 AU - Poynting, J. AU - Gray, P. ER -