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

Mr. Newton
1672 Philosophical Transactions of the Royal Society of London  
doi:10.1098/rstl.1672.0012 fatcat:taccrvbe5rgadedenz65ovivt4