TY - JOUR T1 - On a New Method of Preparing a Test Liquor to Shew the Presence of Acids and Alkalies in Chemical Mixtures. By Mr. James Watt, Engineer; Communicated by Sir Joseph Banks, Bart. P. R. S. JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 74 SP - 419 EP - 422 PY - 1784/01/01/ UR - http://dx.doi.org/10.1098/rstl.1784.0031 M3 - doi:10.1098/rstl.1784.0031 AU - Banks, J. AU - Watt, J. ER -