TY - JOUR T1 - Proceedings of the Council of the Royal Society with Reference to the Undertaking of Certain Physical Observations in India JF - Proceedings of the Royal Society of London (1854-1905) VL - 16 SP - 283 EP - 294 PY - 1867/01/01/ UR - http://dx.doi.org/10.1098/rspl.1867.0056 M3 - doi:10.1098/rspl.1867.0056 ER -