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A book of the formation of hills of sand or gravel at great depths
in water.
9
27.
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.
760
Page
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