TY - JOUR T1 - The Motion of Projectiles Near the Earth's Surface Consider'd, Independent of the Properties of the Conic Sections; In a Letter to Martin Folkes Esquire, Pr. R. S. by Mr. Tho. Simpson F. R. S. JF - Philosophical Transactions (1683-1775) VL - 45 SP - 137 EP - 147 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1748.0010 M3 - doi:10.1098/rstl.1748.0010 AU - Simpson, T. ER -