TY - JOUR T1 - On the Contact of Curves JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 152 SP - 41 EP - 52 PY - 1862/01/01/ UR - http://dx.doi.org/10.1098/rstl.1862.0006 M3 - doi:10.1098/rstl.1862.0006 AU - Spottiswoode, W. ER -