The devoted city of Baza now lay stripped of its beautiful covering of groves and gardens, at once its ornament, its delight, and its protection. The besiegers went on slowly and surely, with almost incredible labors, to invest and isolate the city. They connected their camps by a deep trench across the plain a league in length, into which they diverted the waters of the mountain-streams. They protected this trench by palisadoes, fortified by fifteen castles at regular distances. They dug a deep trench also, two leagues in length, across the mountain in the rear of the city, reaching from camp to camp, and fortified it on each side with walls of earth and stone and wood. Thus the Moors were enclosed on all sides by trenches, palisadoes, walls, and castles, so that it was impossible for them to sally beyond this great line of circumvallation, nor could any force enter to their succor. Ferdinand made an attempt likewise to cut off the supply of water from the city; “for water,” observes the worthy Agapida, “is more necessary to these infidels than bread, making use of it in repeated daily ablutions enjoined by their damnable religion, and employing it in baths and in a thousand other idle and extravagant modes of which we Spaniards and Christians make but little account.” There was a noble fountain of pure water which gushed out at the foot of the hill Albohacen just behind the city. The Moors had almost a superstitious fondness for this fountain, and chiefly depended upon it for their supplies. Receiving intimation from some deserters of the plan of King Ferdinand to get possession of this precious fountain, they sallied forth at night and threw up such powerful works upon the impending hill as to set all attempts of the Christian assailants at defiance. CHAPTER LXXIV. EXPLOIT OF HERNANDO PEREZ DEL PULGAR AND OTHER CAVALIERS.