TY - JOUR T1 - Researches on the Action of Organic Substances on the Ultra-Violet Rays of the Spectrum. Part III. On Examination of Essential Oils. JF - Proceedings of the Royal Society of London (1854-1905) VL - 29 SP - 290 EP - 292 PY - 1879/01/01/ UR - http://dx.doi.org/10.1098/rspl.1879.0050 M3 - doi:10.1098/rspl.1879.0050 AU - Hartley, W. AU - Huntington, A. ER -