TY - JOUR T1 - On the Spectrum of Comet II., 1868. JF - Proceedings of the Royal Society of London (1854-1905) VL - 16 SP - 481 EP - 482 PY - 1867/01/01/ UR - http://dx.doi.org/10.1098/rspl.1867.0109 M3 - doi:10.1098/rspl.1867.0109 AU - Huggins, W. ER -