TY - JOUR T1 - An Extract of Another Letter of the Same to the Publisher, Dated March 30. 1672. by Way of Answer to Some Objection, Made by an Ingenious French Philosopher to the New Reflecting Telescope JF - Philosophical Transactions (1665-1678) VL - 7 SP - 4034 EP - 4035 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1672.0012 M3 - doi:10.1098/rstl.1672.0012 AU - Newton, M. ER -