The same summer Hagnon, son of Nicias, and Cleopompus, son of Clinias, the colleagues of Pericles, took the armament of which he had lately made use, and went off upon an expedition against the Chalcidians in the direction of Thrace and Potidæa, which was still under siege. As soon as they arrived, they brought up their engines against Potidæa and tried every means of taking it, but did not succeed either in capturing the city or in doing anything else worthy of their preparations. For the plague attacked them here also, and committed such havoc as to cripple them completely, even the previously healthy soldiers of the former expedition catching the infection from Hagnon’s troops; while Phormio and the sixteen hundred men whom he commanded only escaped by being no longer in the neighbourhood of the Chalcidians. The end of it was that Hagnon returned with his ships to Athens, having lost one thousand and fifty out of four thousand heavy infantry in about forty days; though the soldiers stationed there before remained in the country and carried on the siege of Potidæa. After the second invasion of the Peloponnesians a change came over the spirit of the Athenians. Their land had now been twice laid waste; and war and pestilence at once pressed heavy upon them. They began to find fault with Pericles, as the author of the war and the cause of all their misfortunes, and became eager to come to terms with Lacedaemon, and actually sent ambassadors thither, who did not however succeed in their mission. Their despair was now complete and all vented itself upon Pericles. When he saw them exasperated at the present turn of affairs and acting exactly as he had anticipated, he called an assembly, being (it must be remembered) still general, with the double object of restoring confidence and of leading them from these angry feelings to a calmer and more hopeful state of mind. He accordingly came forward and spoke as follows: