TY - JOUR T1 - An Extract of Letters from Dr. John Wallis to the Publisher, 1672.Sept.26.&c. Concerning the Suspension of Quick Silver Well Purged of Air, Much Higher Than the Ordinary Standard in the Torricellian Experiment JF - Philosophical Transactions (1665-1678) VL - 7 SP - 5160 EP - 5170 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1672.0066 M3 - doi:10.1098/rstl.1672.0066 AU - Wallis, J. ER -