Water gives the first impetus to its motion.

A book of the levelling of waters by various means,

A book of diverting rivers from places where they do mischief.

A book of guiding rivers which occupy too much ground.

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

A book of the waters which with various currents pass through seas.

A book of deepening the beds of rivers by means of currents of
water.

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

A book of the various movements of waters passing through channels
of different forms.

A book of preventing small rivers from diverting the larger one into
which their waters run.

A book of the lowest level which can be found in the current of the
surface of rivers.

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

A book of the various motions of waters in their rivers.