TY - JOUR T1 - Observations of a Comet, Made with a View to Investigate Its Magnitude and the Nature of Its Illumination. To Which is Added, an Account of a New Irregularity Lately Perceived in the Apparent Figure of the Planet Saturn JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 98 SP - 145 EP - 163 PY - 1808/01/01/ UR - http://dx.doi.org/10.1098/rstl.1808.0013 M3 - doi:10.1098/rstl.1808.0013 AU - Herschel, W. ER -