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)
Fig. 19. … the pressure of the air drives the water in. Or. in other words, asuction pump consists of a tube not more tlian o4 feet long, with anysort of contrivance, at the top, that will remove the downward i)ressureof the air within, so that its pressure on the water without will forcethe liquid up the…
Physics · Astronomy
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