Every Boy's Book

Hop-scotch to hare-and-hounds, conjuring to chemistry, rabbits to rowing — the complete Victorian repertoire of things for a boy to do, set down with rules and diagrams.

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Reason for This

The reason of this is, that the pressure on the top of the jar condenses the air between the cover and the water surface; this condensation then presses on the water below, and influences it through its whole extent, compressing also the air in the figures, forcing as much more water into them as to render them heavier than water, and therefore heavy enough to sink.

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