RIVERS POLLUTION. 253 do possess some slight medicinal properties as shown by the effect the water at Tilbury and Hockley produce in the case of cattle, as noticed above.152 This effect cannot, of course, be ascribed to the fidei quantum sufficiat which may have been operative in the case of human patients. RIVERS POLLUTION FROM THE NATURALISTS' POINT OF VIEW. Saturday, December 14TH, 1907. A very largely attended and representative meeting resulted from the invitation of the Council of the Essex Field Club to a Conference on the above subject, held in the Municipal Technical Institute, Stratford. The Conference was called because the Club recognised that the subject of rivers pollution is a matter which is of very special interest to sanitary inspectors, the representatives of the fishing industries, and to manufacturers, as well as to scientists and the public at large, in view of the probability of legislation on the subject. Previous to the meeting tea was served in the tea-room of the Institute. At six o'clock the Mayor of West Ham (Councillor J. R. Moore-Smith, J.P.) took the chair, his place being subsequently occupied by the President of the Club, Mr. Miller Christy, F.L.S. In the assembly were naturalists, geologists, meteorologists, sanitary officers and representatives of Water-boards and County and Borough Councils. Among those present were :— Mr. E. Barnard, M.P. (Chairman, Works Committee, London Water Board), Professor E. G. Coker, D.Sc. (Engineering Depart- ment, City Guilds Institute), Mr. W. H. Dalton, F.G.S., F.C.S., Mr. L. V. Dalton, F.G.S., Alderman W. W. Glenny (Vice- Chairman, Essex County Council), Mr. David Howard, J.P., F.C.S. Past-President, Society of Chemical Industry), Mr. S. R. Hobday (Lee Conservancy Board), Mr. A. F. Hogg, M.A. (Principal, Technical Institute), Mr. T. V. Holmes, F.G.S., Mr. Albert E. Jackson (Editor, "Anglers' News"), Dr. Robert Jones, Mr. H. Kent 152 See ante, pp. 220 and 245.