Discussion of papers presented on filtration.
—— Journal für Gas- und Wasserversorgung, 1894, p. 185.
A history of the “Rules for Water-filtration” (Appendix I), with some discussion of them.
Grahn and Meyer. Reiseberichte über künstliche central Sandfiltration. Hamburg, 1876.
An account of the observations of the authors in numerous cities, especially in England.
Grenzmer. Centralblatt der Bauverwaltung, 1888, p. 148.
A description of new filters at Amsterdam, with plans.
Gruber. Centralblatt für Bakteriologie, 1893, p. 488.
Salient points in judging of the work of sand-filters.
Halbertsma. Journal für Gas- und Wasserversorgung, 1892, p. 43.