TY - JOUR T1 - On an Easy Method of Measuring Approximately the Intensity of Total Daylight JF - Proceedings of the Royal Society of London (1854-1905) VL - 16 SP - 525 EP - 526 PY - 1867/01/01/ UR - http://dx.doi.org/10.1098/rspl.1867.0111 M3 - doi:10.1098/rspl.1867.0111 AU - Wright, R. ER -