TY - JOUR T1 - Researches on the Action of Organic Substances on the Ultra-Violet Rays of the Spectrum. Part III. An Examination of Essential Oils JF - Proceedings of the Royal Society of London (1854-1905) VL - 31 SP - 1 EP - 26 PY - 1880/01/01/ UR - http://dx.doi.org/10.1098/rspl.1880.0001 M3 - doi:10.1098/rspl.1880.0001 AU - Hartley, W. AU - Huntington, A. ER -