Alexander celebrated his victory by sacrifices to the gods, and festivities on the banks of the Hydaspes; where he also gave directions for the foundation of two cities—Nikæa, on the eastern bank; and Bukephalia, on the western, so named in commemoration of his favorite horse, who died here of age and fatigue.[541] Leaving Kraterus to lay out and erect these new establishments, as well as to keep up communication, he conducted his army onward in an easterly direction towards the river Akesines (Chenab).[542] His recent victory had spread terror around; the Glaukæ, a powerful Indian tribe, with thirty-seven towns and many populous villages, submitted, and were placed under the dominion of Porus; while embassies of submission were also received from two considerable princes—Abisares, and a second Porus, hitherto at enmity with his namesake. The passage of the great river Akesines, now full and impetuous in its current, was accomplished by boats and by inflated hides, yet not without difficulty and danger. From thence he proceeded onward in the same direction, across the Punjab—finding no enemies, but leaving detachments at suitable posts to keep up his communications and ensure his supplies—to the river Hydraotes or Ravee; which, though not less broad and full than the Akesines, was comparatively tranquil, so as to be crossed with facility.[543] Here some free Indian tribes, Kathæans and others, had the courage to resist. They first attempted to maintain themselves in Sangala by surrounding their town with a triple entrenchment of waggons. These being attacked and carried, they were driven within the walls, which they now began to despair of defending, and resolved to evacuate by night. But the project was divulged to Alexander by deserters, and frustrated by his vigilance. On the next day, he took the town by storm, putting to the sword 17,000 Indians, and taking (according to Arrian) 70,000 captives. His own loss before the town was less than 100 killed, and 1200 wounded. Two neighboring towns, in alliance with Sangala, were evacuated by their terrified inhabitants. Alexander pursued, but could not overtake them, except 500 sick or weakly persons, whom his soldiers put to death. Demolishing the town of Sangala, he added the territory to the dominion of Porus, then present, with a contingent of 5000 Indians.[544] [541] Arrian states (v. 19, 5) that the victory over Porus was gained in the month Munychion of the archon Hegemon at Athens—that is, about the end of April, 326 B. C. This date is not to be reconciled with another passage, v. 9, 6—where he says that the summer solstice had already passed, and that all the rivers of the Punjab were full of water, turbid and violent.