Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
189. Intermittent springs.—There are in nature intermittentsprings, the water flowing regularly for a time, and then suddenly ceasing.One of these is illustrated by Fig. 7, Chart 2 (99), in which T is a sub-terranean cavity, having an outlet, L, shaped like a siphon. As thewater now stands, the…
Physics · Astronomy
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