TY - JOUR T1 - On Double Images Caused by Atmospherical Refraction. By William Hyde Wollaston, M. D. F. R. S. JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 90 SP - 239 EP - 254 PY - 1800/01/01/ UR - http://dx.doi.org/10.1098/rstl.1800.0013 M3 - doi:10.1098/rstl.1800.0013 AU - Wollaston, W. ER -