TY - JOUR T1 - A Letter of Mr. John Conyers, Citizen of London; the Author of the Hygroscope Described in Numb. 129; in Which Letter is Contained a Draught and Description of a Very Useful and Cheap Pump, Contrived by the said Mr. Conyers; a Trial of Which Was Also Made at the Repairing of the New Canal of Fleet-River in London, and Elsewhere JF - Philosophical Transactions (1665-1678) VL - 12 SP - 888 EP - 890 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1677.0022 M3 - doi:10.1098/rstl.1677.0022 AU - Conyers, J. ER -