TY - JOUR T1 - On Hamilton's Numbers. Part II JF - Philosophical Transactions of the Royal Society of London. A (1887-1895) VL - 179 SP - 65 EP - 71 PY - 1888/01/01/ UR - http://dx.doi.org/10.1098/rsta.1888.0004 M3 - doi:10.1098/rsta.1888.0004 AU - Sylvester, J. AU - Hammond, J. ER -