Eudoxus says, that if we imagine a straight line to be drawn towards the east from the Ceraunian Mountains to Sunium, the promontory of Attica, it would leave, on the right hand, to the south, the whole of Peloponnesus, and on the left, to the north, the continuous coast from the Ceraunian Mountains to the Crisæan Gulf, and the whole of Megaris and Attica. He is of opinion that the shore which extends from Sunium to the Isthmus, would not have so great a curvature, nor have so great a bend, if, to this shore, were not added the parts continuous with the Isthmus and extending to the Hermionic Bay and Acté; that in the same manner the shore, from the Ceraunian Mountains to the Gulf of Corinth, has a similar bend, so as to make a curvature, forming within it a sort of gulf, where Rhium and Antirrhium contracting together give it this figure. The same is the case with the shore about Crissa and the recess, where the Crisæan Sea terminates.[279] 2. As this is the description given by Eudoxus, a mathematician, skilled in the delineations of figures and the inclinations of places, acquainted also with the places themselves, we must consider the sides of Attica and Megaris, extending from Sunium as far as the Isthmus, to be curved, although slightly so. About the middle of the above-mentioned line[280] is the Piræus, the naval arsenal of the Athenians. It is distant from Schœnus, at the Isthmus, about 350 stadia; from Sunium 330. The distance from the Piræus to Pagæ[281] and from the Piræus to Schœnus is nearly the same, yet the former is said to exceed the latter by 10 stadia. After having doubled Sunium, the navigation along the coast is to the north with a declination to the west. 3. Acte (Attica) is washed by two seas; it is at first narrow, then it widens towards the middle, yet it, nevertheless, takes a lunated bend towards Oropus in Bœotia, having the convex side towards the sea. This is the second, the eastern side of Attica. The remaining side is that to the north, extending from the territory of Oropus towards the west, as far as Megaris, and consists of the mountainous tract of Attica, having a variety of names, and dividing Bœotia from Attica; so that, as I have before remarked, Bœotia, by being connected with [CAS. 391] two seas, becomes the Isthmus of the third peninsula, which we have mentioned before, and this Isthmus includes within it the Peloponnesus, Megaris, and Attica. For this reason therefore the present Attica was called by a play upon the words Acta and Actica, because the greatest part of it lies under the mountains, and borders on the sea; it is narrow, and stretches forwards a considerable length as far as Sunium. We shall therefore resume the description of these sides, beginning from the sea-coast, at the point where we left off.