TY - JOUR T1 - An Attempt to Ascertain the Date of the Original Construction of Stonehenge from Its Orientation JF - Proceedings of the Royal Society of London (1854-1905) VL - 69 SP - 137 EP - 147 PY - 1901/01/01/ UR - http://dx.doi.org/10.1098/rspl.1901.0090 M3 - doi:10.1098/rspl.1901.0090 AU - Lockyer, N. AU - Penrose, F. ER -