TY - JOUR T1 - On the Instability of the Pear-Shaped Figure of Equilibrium of a Rotating Mass of Liquid JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 217 SP - 1 EP - 34 PY - 1918/01/01/ UR - http://dx.doi.org/10.1098/rsta.1918.0001 M3 - doi:10.1098/rsta.1918.0001 AU - Jeans, J. ER -