TY - JOUR T1 - On a New Property of the Tangents of Three Arches Trisecting the Circumference of a Circle JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 98 SP - 122 EP - 123 PY - 1808/01/01/ UR - http://dx.doi.org/10.1098/rstl.1808.0010 M3 - doi:10.1098/rstl.1808.0010 AU - Maskelyne, N. ER -