TY - JOUR T1 - On a Self-Recording Method of Measuring the Intensity of the Chemical Action of Total Daylight JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 164 SP - 655 EP - 673 PY - 1874/01/01/ UR - http://dx.doi.org/10.1098/rstl.1874.0018 M3 - doi:10.1098/rstl.1874.0018 AU - Roscoe, H. ER -