TY - JOUR T1 - An Easie Demonstration of the Analogy of the Logarithmick Tangents to the Meridian Line or Sum of the Secants: With Various Methods for Computing the Same to the Utmost Exact Ness, by E. Halley JF - Philosophical Transactions (1683-1775) VL - 19 SP - 202 EP - 214 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1695.0028 M3 - doi:10.1098/rstl.1695.0028 AU - Halley, E. ER -