TY - JOUR T1 - Part of a Letter of Mr. William Derham, Rector of Upminster, Dated Dec. 6. 1697. Giving an Account of Some Experiments about the Heighth of the Mercury in the Barometer, at Top and Bottom of the Monument: and about Portable Barometers JF - Philosophical Transactions (1683-1775) VL - 20 SP - 2 EP - 4 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1698.0002 M3 - doi:10.1098/rstl.1698.0002 AU - Derham, W. ER -