TY - JOUR T1 - An Extract of a Letter Lately Written by an Ingenious Person from Paris, Containing Some Considerations upon Mr. Newtons Doctrine of Colors, as Also upon the Effects of the Different Refractions of the Rays in Telescopical Glasses JF - Philosophical Transactions (1665-1678) VL - 8 SP - 6086 EP - 6087 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1673.0034 M3 - doi:10.1098/rstl.1673.0034 ER -