Water and Air in Joined Vessels
Buoyancy and the accelerating descent of trapped air; water rises as much as it falls
An experiment with two joined vessels, one holding water and the other air: placed with air beneath water, the air sustains the water, but when the water is the greater quantity it drives the air down to the bottom of the deep. As the air is forced downward it gains speed at every degree of its descent, because the weight of water above it keeps growing. A lower addition on water and tubes states the principle that water's rise equals its fall.
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Water and air in two joined vessels
Given two equal quantities in joined vessels, one water and one air, with the air placed beneath the water of a deep, the air sustains the water. But when the water is the greater quantity it drives the air down to the bottom of the deep.
Trapped air accelerating as it is driven down
Once the air is pushed by the water toward the bottom of the deep, at every degree of its descent it gains speed of motion. This happens because the quantity of water above the descending air keeps increasing.
Water rises as much as it descends
A lower addition shows water and tubes within a vessel, lettered m f h n, a b, p o, c, r q, d e and t g S. Its principle is stated plainly: water has its rise equal to its descent.