Accordingly he took the place of Metellus in the course of 647; and held the command in the campaign of the following year; but his confident promise to do better than his predecessor and to deliver Jugurtha bound hand and foot with all speed at Rome was more easily given than fulfilled. Marius carried on a desultory warfare with the Gaetulians; he reduced several towns that had not previously been occupied; he undertook an expedition to Capsa (Gafsa) in the extreme south-east of the kingdom, which surpassed even that of Thala in difficulty, took the town by capitulation, and in spite of the convention caused all the adult men in it to be slain--the only means, no doubt, of preventing the renewed revolt of that remote city of the desert; he attacked a mountain-stronghold--situated on the river Molochath, which separated the Numidian territory from the Mauretanian--whither Jugurtha had conveyed his treasure-chest, and, just as he was about to desist from the siege in despair of success, fortunately gained possession of the impregnable fastness through the coup de main of some daring climbers. Had his object merely been to harden the army by bold razzias and to procure booty for the soldiers, or even to eclipse the march of Metellus into the desert by an expedition going still farther, this method of warfare might be allowed to pass unchallenged; but the main object to be aimed at, and which Metellus had steadfastly and perseveringly kept in view-- the capture of Jugurtha--was in this way utterly set aside. The expedition of Marius to Capsa was a venture as aimless, as that of Metellus to Thala had been judicious; but the expedition to the Molochath, which passed along the border of, if not into, the Mauretanian territory, was directly repugnant to sound policy. King Bocchus, in whose power it lay to bring the war to an issue favourable for the Romans or endlessly to prolong it, now concluded with Jugurtha a treaty, in which the latter ceded to him a part of his kingdom and Bocchus promised actively to support his son-in-law against Rome. The Roman army, which was returning from the river Molochath, found itself one evening suddenly surrounded by immense masses of Mauretanian and Numidian cavalry; they were obliged to fight just as the divisions stood without forming in a proper order of battle or carrying out any leading command, and had to deem themselves fortunate when their sadly-thinned troops were brought into temporary safety for the night on two hills not far remote from each other. But the culpable negligence of the Africans intoxicated with victory wrested from them its consequences; they allowed themselves to be surprised in a deep sleep during the morning twilight by the Roman troops which had been in some measure reorganized during the night, and were fortunately dispersed. Thereupon the Roman army continued its retreat in better order and with greater caution; but it was