TY - JOUR T1 - On the Deflection of the Plumb-Line at Arthur's Seat, and the Mean Specific Gravity of the Earth JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 146 SP - 591 EP - 606 PY - 1856/01/01/ UR - http://dx.doi.org/10.1098/rstl.1856.0029 M3 - doi:10.1098/rstl.1856.0029 ER -