Minutes of a meeting of the Society ' The President in the Chair The following Gentlemen had leave to be present viz, Mr Magalhaens and Mr Pyfinch by Mr B Wilson Mr Bates and Mr Chirat by Dr Hampe Dr Huck and Dr Morgan by Dr Franklin Monsieur Mallet and Mr Belchier by Dr Birch Dr Ribes and Dr Gerresheim by Dr Collinson Mr Withopf and Mr Frankombe by Mr Baker James Pringle Esq the Marquis of Caraccioli Count Carbury and Mr Erskine by the President Mr Hall by Dr Morton Mr Small by Mr J Belchier Mr Taylor and Dr Grummert by Mr Willet Mr Kirgan by Dr Morris The minutes of the last meeting were read. ' .......................... A Model of a Machine for raising water, called the Centrifugal Engine, was exhibited and wrought before the Society : and a paper entitled "A genmeral Account of the Centrifugal Engine for raising Water, by Robert Erskine, the Inventor, Was read. Mr Erskine says, that this Machine raises Water by the pressure of the Air, and the Centrifugal force, the Water being ejected by a Whirling motion above, And acting the part of a Piston on t he Column of Water to be lifted, which column is forced up by the Weight of the Atmosphere. The Inventor predicates the superior Excellence of his Engine, from the smallness of the friction, from the direct or immediate appllication of the power, from its needing neither Piston, nor Valves, from the little room it Occupies : and he adds that he finds by Experiment that it works as well, when the ejec ting tubes are in an Oblique, or even Vertical Situation, as When they are in a horizontal. A Particular description and a drawing or Plan of the Engine were promised by Mr Erskine, to whom thanks were returned for the communication. ' 24 January 1765