But it was imperative that I should visit the felucca, by hook or by crook; and since I had already discovered that it could not be managed during the day, there was nothing for it but to make the attempt at night.  Now, I was in Pacheco's charge, he was responsible for me, and although I was nominally free to come and go as I would, it was not long before I discovered that it was practically impossible for me to get out of his sight for more than five or ten minutes at a time, except at night time, when I was granted the privilege of a small room to myself in his house.  Even then, for the first week of my sojourn, I could scarcely stir in my bed but at the creaking of it he would be at my door, inquiring why I was moving, and whether I required anything, the questioning being, I fancied, simply for the purpose of assuring himself that I was still in the room.  But as the days--or rather the nights-- went on his vigilance gradually relaxed, for I so shaped my speech as to convey the impression that, at least in my own mind, I had practically decided to join the band.  It was this, perhaps, that so far threw him off his guard as to betray him, on a certain night, into the indulgence of his favourite vice, which was a too-marked devotion to the rum bottle.  For several nights in succession--ever since I had been placed in his charge, in fact--he had been perforce compelled to remain perfectly sober in order that he might keep a strict watch upon me, but at length when, while we were sitting at table together, taking supper, I allowed him to believe that I had finally decided to go to Fernandez the next morning and take the oath, he ventured to celebrate my conversion by drinking my health in a stiff nor'wester of rum and water--rather more rum than water.  That act of weakness was his undoing, for at the first taste of the spirit after his forced abstention he completely lost all control of himself, and could no more refrain from taking a second tumbler than he could have flown.  The second naturally led to a third, and the third to a fourth; whereupon, recognising that my chance was at hand, I yawned twice or thrice most portentously, complained of fatigue, and retired to my room, he following as far as the door and locking me in, as was his custom before going to his own room.  But that troubled me not a whit, for the house was of one story only, and to slip out of it by way of the open window was almost as easy as walking out through the door, once my gaoler became so deeply wrapped in sleep that my stealthy movements would not awake him.