Caesar

During this expedition, moreover, he intended to dig through the isthmus of Corinth, and had already put Anienus in charge of this work; he intended also to divert the Tiber just below the city into a deep channel, give it a bend towards Circeium, and make it empty into the sea at Terracina, thus contriving for merchantmen a safe as well as an easy passage to Rome;

and besides this, to convert the marshes about Pomentinum and Setia into a plain which many thousands of men could cultivate; and further, to build moles which should barricade the sea where it was nearest to Rome, to clear away the hidden dangers on the shore of Ostia, and then construct harbours and roadsteads sufficient for the great fleets that would visit them. And all these things were in preparation.

The adjustment of the calendar, however, and the correction of the irregularity in the computation of time, were not only studied scientifically by him, but also brought to completion, and proved to be of the highest utility. For not only in very ancient times was the relation of the lunar to the solar year in great confusion among the Romans, so that the sacrificial feasts and festivals, diverging gradually, at last fell in opposite seasons of the year,