In the corner, from the floor upwards, he marked off a rectangular space. "We shall have to loosen a block of wall this size, push it out at the right moment, crawl through, put it back again to avert suspicion, and then make the best of our way into the forest. That was how we escaped from Vera Cruz; the trick should serve us a second time." "Three hide better than seven," suggested Jeffreys. "And seven can fight better than three," added the sailor. "We shall do no good in the forest without weapons. The game will not walk to our fire to be cooked. Either Dons or Indians must furnish us. We lie here, sheep in a pen, awaiting the butcher. If I am to die in Panama, let it be no sheep's death." Each heart echoed these sentiments, and all resolved to risk the desperate chances for life and liberty. Operations were commenced at once. It was no great undertaking to remove, with proper tools, a block of baked clay, some three feet or so by two feet, from a typical Panama wall. The prison wall was about three feet thick, and almost as hard as an English brick. The spearhead was of the small sort, and really little better than a large arrowhead; fortunately it was almost new, and well sharpened. Nick began working at the floor level, and the first part of the process was to work the three feet odd along the base of the wall and back into it until only a thin shell was left on the outer side. The work could only progress slowly, for there must be little sound of scraping or ringing of iron on the stone-like clay, and all dust from the working must be dispersed about the floor. Two watched at the window all the time. Interruptions were many and sometimes lengthy, and after three hours of broken labour the workers had only got some two inches back into the wall along the floor line. But noon and the death-like stillness of "siesta" gave them a better opportunity. A shaft that had been procured some days previously was fished out from its hiding-place, and fitted to the spearhead. Working in short shifts, by the space of an hour the floor line was worked through so that daylight was visible in one or two places, and the upright line in the angle of the wall was worked full depth back to a height of half a foot. In the late afternoon, after the visit of the jailer, a groove sufficiently deep to guide them in the darkness was made all round. The work was to be finished when castle and town sank to silence after nightfall. The oppressive heat of the past weeks was broken just after sunset by a terrific thunderstorm, and the fury of the elemental outburst covered all noises and allowed the toilers to work without any precaution. But, alas! their very haste was their undoing. The head, blunted and worn, broke off short in the depth of the wall. Attempts to extricate it in the darkness only wedged it in more tightly. With a groan of despair, the wearied men gave up their task, and sought slumber.