TY - JOUR T1 - On an Apparatus for Facilitating the Reduction of Tidal Observations JF - Proceedings of the Royal Society of London (1854-1905) VL - 52 SP - 345 EP - 389 PY - 1892/01/01/ UR - http://dx.doi.org/10.1098/rspl.1892.0082 M3 - doi:10.1098/rspl.1892.0082 AU - Darwin, G. ER -