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)
IDS. Figure 37.—Loss of effective head in public water-works.—Though the head in the reservoir of pul)lic watei-worksmay remain the same at all times, yet, at remote points, the water, es-pecially during business hours, will not rise to the same, or even to anapproximate, level. This is because the…
Physics · Astronomy
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