TY - JOUR T1 - Spectroscopic Notes.--No. II. On the Evidence of Variation in Molecular Structure JF - Proceedings of the Royal Society of London (1854-1905) VL - 22 SP - 372 EP - 374 PY - 1873/01/01/ UR - http://dx.doi.org/10.1098/rspl.1873.0067 M3 - doi:10.1098/rspl.1873.0067 AU - Lockyer, J. ER -