Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 38
inking of the surface of the water inthe vessel containing it. In others the water ran from onevessel to another, there being in the lower a cork or piece oflight wood which as the vessel filled, rose and thus indicatedthe hour. In later clepsydras the hour has been indicated bya dial. Fig. 53… … Fia. 53.—Water-Clock. A vessel containing wine, and provided with an open spout, standsupon a pedestal: it is required by shifting a weight to cause the spout topour forth a given quantity,—sometimes, for instance, a half cotyle (J4pint), sometimes a cotyle {Vz pint), and in short, whatever…
Hydraulic machinery · Pumping machinery
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