TY - JOUR T1 - Preliminary Note on Photographs of the Spectrum of the Nebula in Orion JF - Proceedings of the Royal Society of London (1854-1905) VL - 48 SP - 199 EP - 201 PY - 1890/01/01/ UR - http://dx.doi.org/10.1098/rspl.1890.0026 M3 - doi:10.1098/rspl.1890.0026 AU - Lockyer, J. ER -