TY - JOUR T1 - The Complete System of the Periods of a Hollow Vortex Ring JF - Philosophical Transactions of the Royal Society of London. A (1887-1895) VL - 186 SP - 603 EP - 619 PY - 1895/01/01/ UR - http://dx.doi.org/10.1098/rsta.1895.0017 M3 - doi:10.1098/rsta.1895.0017 AU - Pocklington, H. ER -