TY - JOUR T1 - A Letter from the Rev. Nevil Maskelyne, A. M. Fellow of Trinity College, in the University of Cambridge, and F. R. S. to the Rev. Dr. Birch, Secretary to the Royal Society; Containing a Theorem of the Aberration of the Rays of Light Refracted Through a Lens, on Account of the Imperfection of the Spherical Figure JF - Philosophical Transactions (1683-1775) VL - 52 SP - 17 EP - 21 PY - 1761/01/01/ UR - http://dx.doi.org/10.1098/rstl.1761.0005 M3 - doi:10.1098/rstl.1761.0005 AU - Maskelyne, N. ER -