A book of driving back armies by the force of a flood made by releasing waters.

A book showing how the waters safely bring down timber cut in the mountains.

A book of raising large bridges higher simply by the swelling of the waters.

A book of the mountains that would stand forth and become land if our hemisphere were to be uncovered by the water.

A book of the earth carried down by the waters to fill up the great abyss of the seas.

A book of the formation of hills of sand or gravel at great depths in water.

A book of the leveling of waters by various means.

A book of guiding rivers that occupy too much ground.

A book of parting rivers into several branches and making them fordable.

A book of the origin of rivers that flow from the high tops of mountains.

A book of controlling rivers so that the little beginnings of mischief caused by them may not increase.