2. Why the waves in the ocean do not break. The difference of the current of waters issuing from cataracts to those that issue from rivers. Of the waves of rivers increased by the wind. To recognize from afar the beds of running rivers. - 9 m

Of the water that is in the moon. - 9 m

Of the great variety of the ebb of the sea.

Of the perspective of the mirrorings of the waters, by the principles of which one proves water to be around and within the moon. - 9 m

Of the wave of water that the wind makes across the course of the river.

Of the recognizing that the pilots of boats make of the greatest depth of the river while remaining remote from it. - 8 m

Of finding the least depth in the middle of rivers. - 8 m

Of the place where the river, in its lowest state, has to preserve its currents.

Where the current changes in the greatest floods of rivers.

Of the whirlpools of the sea.

Of the whirlpools of rivers.

1. Of the currents of rivers that strongly hollow out the banks. - 6 m

Of data, that is, various given cases of the sphere of water. - 5 m 2 m 3 m 2 m

2. Of the encounters of the various currents.

1. Of the varieties of beds made by several various currents.

1. Of the beds made by a single current.

Of the things covered by the courses of the waters.

1. Of the things uncovered by the waters.

1. Of the great stones moved by small rivers. - 1 m

The wearing-away of the mountains by means of the waters. How the air penetrates beneath the waters.

Whether contrary waves penetrate one another or not.
2. Encounters of the waters in the concavities of the beds.
2. Encounters of the waters in the concavities of the banks.
2. Encounters of the waters in the upper concavities of conduits or of the arches of bridges.

Why the third wave is greater than the first.

Where the turbulence of the water is generated.

Where the turbulence of the water is maintained for a long space.

2. Where the turbulence of the water settles.
2. The weight of the water is in the line of its motion.

...olis ... a of the ... veins ... clean ...nferi ... to the waters ...eral ...outside. (fragmentary, the edge of the sheet cut away)

Of the things struck by the waters.

Of the things that strike the waters.

Surface whirlpools.

Whirlpools that rise from the bed to the surface. Whirlpools from the surface to the bed.

Whirlpools that move with the course of the river.

Whirlpools reciprocal in their turnings, such as are those of the ebbs and flows of rivers.

Continuous lateral whirlpools. Discontinuous lateral whirlpools. Incident and reflected whirlpools between up and down.

Whirlpools broad above and narrow at the bottom.

Whirlpools narrow above and broad at the bottom.

Whirlpools straight from the bed to the top.

Whirlpools oblique from the bed to the top.

Enormous whirlpools.

Brief whirlpools.

Whirlpools of bubbling.

Whirlpools like reeds.

Whirlpools like a screw.

Whirlpools hollow and filled with air.

Whirlpools not hollow.

1. Of the percussion of water moving in various obliquities and joined together.

1. Of the percussion of waters of various thicknesses.

1. Of the percussion of waters broad and shallow.

1. Of the percussion of waters narrow and thick.

1. Of the percussion upon dense objects.

1. Of the percussion of water upon pierced objects.

The transmutation of water into vapor, as is seen with boiling water at the exhaling of the small vent-hole of the vessel.

Of the air that in summer is turned into water in cold places, as around the flask of cool and not of hot water.

Of firing a bombard with water in the bombard of red-hot iron.

Of giving water to the meadows.

1. Of the fall of water through diverse obliquities.

Of the rarefaction of water made into most subtle air.

Of the condensation of water made into hard ice.

Of the water torn from the earth and drawn up into the air by heat.

Of the water in the air driven downward by the cold region.

1. Of the fall of water from various heights.

1. Of the fall of waters upon various obliquities of one same object.

1. Of the fall of water upon diverse objects.

2. Of the music of the waters.

Weir of Ognissanti.
1. Of the falls of waters that make no reflex motion.
2. Of the falls where the sheets do not become discontinuous.
2. Of the falls that become discontinuous.
2. Of the falls of waters that within the air pierce one another.
2. Of the falls that within the air collide and do not pierce one another.

Accidents of the motions of the waters.

Encounters of the courses of waters among themselves in one same river, through diverse qualities of angles that generate diverse powers.
1. Encounters of the waters among objects covered by the water and resistant to the blows of those waters.
1. Encounters of the waters upon objects covered and unstable.
1. Encounters of the waters upon objects that rise above the waters and are permanent.
1. Encounters of the waters upon objects pliable and submerged.
Encounter of the waters upon pliable objects that rise above the waters.
Encounter of the waters upon objects that yield with a circular motion, that is, the wheels of water instruments.
1. Encounters of the waters upon different figures of stable objects overtopped by those waters.
1. Encounter of the waters upon diverse qualities of their beds, sandy or gravelly or clayey, that is, objects that yield without bending.
Encounter of the waters upon objects that roll along the bottom.
2. Encounter of turbid waters with clear ones, or of clear with turbid.
1. Encounter of the waters with the banks of rivers or with rocks.
1. Encounter of the sides of rivers with the oblique shores of rivers.
2. Encounters of waters equal in power and in quantity.
2. Encounters of waters equal in power and not in quantity.
2. Encounters of waters equal in quantity and not in power.
2. Encounters of waters unequal in power and in quantity.
Of the things carried by the waters that wear away their beds and their banks, such as gravel and sand and the like.
Where the course of the waters keeps its impetus over the greater distance.
Where the impetus of the waters more quickly slackens.
Where one same impetus is more powerful, that is, whether below or above or lateral.

2. Percussion of waters with the current at an angle.
2. Percussion of water separating at an angle.
2. Percussion of water from the circle toward the center.
2. Percussion of water toward the center at the circumference.

In what part of the length of the impetus of the waters the greater power is found. In what part of the impetus the greater weakness is found.
Why one same course of water keeps varying the bed of the river. Why straight rivers become winding.
Of the beds that draw the river's waters toward themselves.
Of the beds that drive off the river's waters and bend them into other sites.
Of the various materials that the courses of the waters leave upon their beds.
Of the materials that the courses of the rivers take from their beds.
1. Of the causes of the ruin of the banks of rivers.
Of the causes of the deposits of materials on the banks of rivers.
Maintenance of the current through the middle of the width within the banks.
Deviation of the river's current from wherever it is most powerful.
1. Of making rivers scour throughout their whole middle.
How rivers have to carry and leave the soil in whatever place of that river.
1. Where the great depths are made.
Where the raised hills beneath the waters are generated.
2. Where the waves of the water run to their own destruction, and of the nature of the wave of water in rivers.
Of the wave in the sea.
The wave cannot consume itself immediately.
The wave caused by a long striker makes so much the more perfect a circle as it is nearer to its own consumption.
How the water is so much the more turbid as it is faster, and so conversely, and it wears away the more the heavier it is, and it is the heavier the colder it is.
Where the turbid water slows its course against the clear.
Where the water weighs more upon its bed.
2. How water without motion does not weigh within its element, and that weighs which moves within it.