arge flows to vary at will. In order torender the discharge constant, it is only necessary toaffix the shorter leg of the siphon to a float (Fig. 4),when it will always preserve the same length over the .sur-face of the water. The velocity of the outflow is made tovary by increasing oi diminishing… … Fig. 3.-EGTFTIAN HYDBAVLIC CLOCK SET IN ACTIONBY THE SUN. tremity slides with slight friction through a tube, A B, setinto the float. It will be seen that 200 B. C, the screw was already prac-tically utilized; but the nut was not as yet manufactured,and it will be seen from the Alexandrian…
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