It is in accordance with this state of things that virtually nothing was done for the roads of this province in the imperial period; Roman milestones have been found only in the immediate vicinity of Patrae and of Athens, and even these belong to the emperors of the end of the third and of the fourth century; evidently the earlier governments renounced the idea of restoring communications here. Hadrian alone undertook at least to make the equally important and short land-connection between Corinth and Megara--by way of the wretched pass of the "Scironian cliffs"--into a practicable road by means of huge embankments thrown into the sea. [Sidenote: Piercing of the Isthmus.] The long-discussed plan of piercing the Corinthian isthmus, which the dictator Caesar had conceived, was subsequently attempted, first by the emperor Gaius and then by Nero. The latter even, on occasion of his abode in Greece, personally took the first step towards the canal, and caused 6000 Jewish captives to work at it for a series of months. In connection with the cutting operations resumed in our own day, considerable remains of these buildings have been brought to light, which show that the works were tolerably far advanced when they were broken off, probably not in consequence of the revolution that broke out some time afterwards in the West, but because here, just as with the similar Egyptian canal, in consequence of the difference of level that was erroneously assumed to exist between the two seas, there were apprehensions of the destruction of the island of Aegina and of further mischief on the completion of the canal. No doubt had this canal been completed, it would have shortened the course of traffic between Asia and Italy, but it would not have tended specially to benefit Greece itself. * * * * * [Sidenote: Epirus.] [Sidenote: Nicopolis.]