TY - JOUR T1 - On the Astronomical Refractions JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 113 SP - 409 EP - 495 PY - 1823/01/01/ UR - http://dx.doi.org/10.1098/rstl.1823.0030 M3 - doi:10.1098/rstl.1823.0030 AU - Ivory, J. ER -