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92 a citadel there and to dig wells in the adjoining region. He proposed to make a great naval station at the point where the river divided, and remained sufficiently long on the spot to see some progress made in the construction of a roadstead and dockyard. He then resolved to explore personally both arms of the river down to the sea, and first sailed down the western, or right, branch, which probably debouched near or below Debal, the ancient port of Sind, distant about fifteen miles from Thathah (Tatta). His sailors, accustomed to the tideless waters of the Mediterranean, were thrown into a state of great alarm and confusion by the ebb and flow of the tide, but ultimately Alexander succeeded in pushing on with some of the fastest vessels and reaching the open sea. He sailed out a few miles into the deep, sacrificed bulls to Poseidon, and followed up the sacrifice by a libation, casting the golden vessels used in the ceremony into the ocean as a thank-offering.

He then returned to Patala, where he found the works of the new naval station well advanced, and proceeded to explore the eastern, or left, branch of the river. Near its mouth he passed through a large lake, apparently that now known as the Samarah lake to the west of Amarkot, and again reached the seashore in about latitude 25°. Having spent three days in reconnoitring the coast and arranging for the construction of wells, he returned to Patala. Harbours and docks were built on the shores of the lake, and furnished with garrisons. Provisions to supply the forces for