ABSTRACT
SEASHORES and seaports where vessels regularly sail in and out or have their anchorages are often rendered impassable by the force of the winds and by the sea's emptying sand into them, causing serious loss to the state, or they are made shallower and narrower, or even closed, by the silt carried down by rivers. The wisdom and diligence of our ancestors therefore provided that measures should be taken at public expense against such notable harm, by the methods here portrayed or by other but similar means of relief.
