Entirely occupied with an ardent desire of accomplishing this enterprise against Canete, Caupolican lost sight of his wonted prudence, and too easily reposed confidence in this ill concerted scheme.  The better to arrange his measures on this occasion, he procured an interview with Andrew by means of Pran, and the artful Promaucian appeared before Caupolican with that flattering show of respect and attachment which villains know so well to assume.  He broke out into virulent invectives against the Spaniards, whom he pretended to have always detested, and declared his readiness to perform the promise he had made to Pran, asserting that the execution of the plot would be perfectly easy.  Caupolican applauded his partriotism, and engaged, if the plot succeeded, to raise him to the office of ulmen, and to appoint him first captain in the Araucanian army in reward of his services.  He then shewed him the troops which he had along with him, appointing next day for executing the plot, and dismissed him with the strongest assurances of favour and esteem.  Andrew immediately communicated the intelligence to Reynoso, and the Spaniards employed the whole of that night in making every preparation to obtain the greatest possible advantage from this double act of perfidy.  When the particulars of this plot were communicated to the principal officers of the Araucanian army, they openly disapproved of it, as disgraceful to the national honour, and refused to accompany Caupolican in the expedition.  But he obstinately adhered to his design, and began his march at day-break for Canete with three thousand men, with whom he posted himself in concealment near the place, till Pran came to inform him from Andrew that every thing was in readiness to deliver the place into his hands.  The Araucanians immediately proceeded in silence towards the city, and finding the gate open according to promise began to enter it.  When a sufficient number were got in, the Spaniards suddenly closed the gate upon them, and immediately opened a fire of grape-shot on those without who were crowding to the gate, making a dreadful slaughter.  The cavalry belonging to the garrison, being all in readiness, issued from another gate, and completed the destruction of all who had escaped from the fire of the cannon, so that hardly one of all the Araucanians escaped.  Caupolican escaped the general slaughter of his men with a small number of attendants, and retired to the mountains, whence he hoped to be soon able to return with a new army sufficiently numerous to keep the field.  While the cavalry gave a loose to their fury on the Araucanians without the walls, the infantry were employed within the fort in putting to death all that had got through the gate; who, finding all chance of escape utterly hopeless, chose rather to be cut in pieces than surrender.  Pran, discovering his error when too late, rushed among the thickest of the foe, and escaped by an honourable death from the well merited reproaches of his imprudent and fatal credulity.  Among a few prisoners taken on this occasion were three ulmens, who were all blown from the mouths of cannon.