TY - JOUR T1 - Observations on a Comet. In a Letter from William Herschel, LL.D. F. R. S. to Sir Joseph Banks, Bart. P. R. S. JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 79 SP - 151 EP - 153 PY - 1789/01/01/ UR - http://dx.doi.org/10.1098/rstl.1789.0013 M3 - doi:10.1098/rstl.1789.0013 AU - Herschel, W. ER -