TY - JOUR T1 - On the Measurement of the Chemical Intensity of Total Daylight Made at Catania during the Total Eclipse of Dec. 22nd, 1870 JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 161 SP - 467 EP - 476 PY - 1871/01/01/ UR - http://dx.doi.org/10.1098/rstl.1871.0018 M3 - doi:10.1098/rstl.1871.0018 AU - Roscoe, H. AU - Thorpe, T. ER -