Paper, 'The removal of micro-organisms from water' by Percy F [Faraday] Frankland Frankland writes: 'The overwhelming evidence which has been now accumulated of the fact that some at least of the diseases called “zymotic” are propagated by means of living organisms, renders it interesting to discover in what manner such organisms may be removed from the media—air and water—through which they are in general distributed. In the following pages I have the honour to bring before the Royal Society the results of some experiments upon which I have been recently engaged, with a view to discover whether and to what extent micro-organisms may be removed from water by submitting this medium to some of the various processes of treatment which are in vogue for its purification. For although the chemical efficiency of numerous methods of water-purification has been largely studied, little has been done in the matter of determining their value as agents for the removal of micro-organisms.' Annotations in pencil and ink. Subject: Microbiology / Chemistry Received 18 May 1885. Read 18 June 1885. A version of this paper was published in volume 38 of the Proceedings of the Royal Society as 'The removal of micro-organisms from water'. 1885