TY - JOUR T1 - On the Iron Lines Widened in Solar Spots JF - Proceedings of the Royal Society of London (1854-1905) VL - 31 SP - 348 EP - 349 PY - 1880/01/01/ UR - http://dx.doi.org/10.1098/rspl.1880.0049 M3 - doi:10.1098/rspl.1880.0049 AU - Lockyer, J. ER -