Alexander makes Tyre his rendezvous.--Festivities.--Alexander prepares to march east.--The captive queens.--Alexander's treatment of the queens.--Death of Statira.--Agony of Sysigambis.--Grief of Darius.--Alexander crosses the Euphrates.--Darius crosses the Tigris.--Alexander reaches the Tigris.--He crosses the river.--Fording the river.--The passage effected.--Plan of Darius.--The plain of Arbela.--The caltrop.--Its use in war.--Eclipse of the moon.--Consternation of Alexander's army.--Emotions produced by an eclipse.--Its sublimity.--Measures taken by Alexander to allay the fears of the soldiers.--Alexander approaches the Persian army.--Preparations for the battle.--Alexander surveys the Persian army.--Council of officers.--Number of the armies.--Alexander's address.--Parmenio and Alexander.--Alexander's dress.--War elephants.--The phalanx.--Defeat of the Persians.--Flight of Darius.--Alexander driven from the field.--March to Babylon.--Surrender of Susa.--Plunder of the palace.--Wholesale robbery and murder.--Immense treasures.--Pass of Susa.--The mountaineers.