TY - JOUR T1 - On a New Form of Tangential Equation JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 167 SP - 367 EP - 440 PY - 1877/01/01/ UR - http://dx.doi.org/10.1098/rstl.1877.0011 M3 - doi:10.1098/rstl.1877.0011 AU - Casey, J. ER -