ArticlesScientific Apparatus and Laboratory Methods

LABORATORY AND TEACHING DEVICES MADE FROM PLASTER OF PARIS

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Science  11 Apr 1930:
Vol. 71, Issue 1841, pp. 392-393
DOI: 10.1126/science.71.1841.392

Abstract

A method has been described whereby models of septic tanks for teaching public health and oncometers for physiological demonstration and research may be constructed by employing a wire frame and covering it with plaster of Paris

These models should prove especially useful to teachers in rural and suburban communities and to extension workers whose task it is to keep a vast number of our population informed as to the best measures of protecting their health

These models may be rendered impervious to air and water by means of paraffin, varnish or brushing lacquer