Waterfall and rebound: air carried down among the water's coils
Air rising with water resubmerges; whirling currents follow curved paths to the pool
Two pen notes flank a lightly drawn cascade: on the right, that all the air rising with the water resubmerges through its impetus among the water's revolutions; on the left, that water moving among water follows curved as readily as straight paths and, after rising, returns downward in a whirling motion until it discharges its enclosed air at the surface of the pool. Captions label a cascade-and-rebound diagram with the 'site of the rebound' and the 'site of the impact.' The studies continue the manuscript's analysis of aerated, falling water.
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Air rising with water resubmerges among its revolutions
On the right, a note observes that all the air rising with the water does not stay at the surface. Through its own impetus it plunges again among the revolutions of the water.
Whirling water follows curved paths to the pool
On the left, a longer note argues that water moving among other water is not bound to travel straight rather than curved. After rising, it returns downward in a whirling motion, escorting the river's current until it releases its enclosed air at the surface of the pool.
Rebound of water: site of impact and rebound
Captions for a cascade-and-rebound diagram label the 'site of the rebound' and the 'site of the impact.' They mark where the falling water strikes the pool and springs back up.