Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 864
value becomes an increment to the force of gravity of thewater, and, to some extent, economizes a power which would otherwise act injuriously in projecting thewater beyond the proper range. The horizontal dimension of the orifice, under this arrangement, andespecially when the system of ventilation… … WT~^
Mechanical engineering · Mechanics · Engineering
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