Contains a most valuable discussion of the relations of filtration to cholera, typhoid fever, and diarrhœa, with numerous tables and charts. (Abstract in Appendix II.)
Reinsch. Centralblatt für Bakteriologie, 1895, p. 881.
An account of the operation of the Altona filters. High numbers of bacteria in the effluents have often resulted from the discharge of sludge from the sedimentation-basins onto the filters, due to the interference of ice on the action of the floating outlet for the basins, and this, rather than the direct effect of cold, is believed to be the direct cause of the low winter efficiency. The author urges the necessity of a deeper sand-layers in no case less than 18 inches thick.
Renk. Gesundheits-Ingenieur, 1886, p. 54.
—— Über die Ziele der künstliche Wasserfiltration.
Ruhlmann. Wochenblatt für Baukunde, 1887, p. 409.
A description of filters at Zürich.
Salbach. Glaser’s Annalen, 1882.
Filters at Groningen, Holland, built in 1880. Alum used.
Samuelson. Translation of Kirkwood’s “Filtration of River-waters” into German, with additional notes especially on the theory of filtration and the sand to be employed. Hamburg, 1876.