Issue 25 and Volume 34.

BOOK RECEIVED “Water Meters” is the title of a pamphlet just received from the Henry R. Worthington company, whose new disk meter is described and illustrated with cuts showing the internal construction. The pamphlet also describes the standard duplex piston meter and the Worthington hot-water meter. The latter device has been found of great value in boiler plants for checking up the evaporative values of different kinds of coal, the efficiency of firemen, etc.

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