TY - JOUR T1 - Account of Levellings Carried across the Isthmus of Panama, to Ascertain the Relative Height of the Pacific Ocean at Panama and of the Atlantic at the Mouth of the River Chagres; Accompanied by Geographical and Topographical Notices of the Isthmus JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 120 SP - 59 EP - 68 PY - 1830/01/01/ UR - http://dx.doi.org/10.1098/rstl.1830.0004 M3 - doi:10.1098/rstl.1830.0004 AU - Lloyd, J. ER -