TY - JOUR T1 - Actinometrical Observations Made at Dehra and Mussoorie in India, October and November 1869, in a Letter to the President JF - Proceedings of the Royal Society of London (1854-1905) VL - 19 SP - 225 EP - 234 PY - 1870/01/01/ UR - http://dx.doi.org/10.1098/rspl.1870.0027 M3 - doi:10.1098/rspl.1870.0027 AU - Hennessey, J. ER -