The tongue of land which divides the two Americas is not, at its utmost width, above eighteen leagues, and in some parts becomes narrowed a little more than seven. And, altho from the port of Careta to the point toward which the course of the Spaniards was directed was only altogether six days' journey, yet they consumed upon it twenty; nor is this extraordinary. The great cordillera of sierras which from north to south crosses the new continent, a bulwark against the impetuous assaults of the Pacific Ocean, crosses also the Isthmus of Darien, or, as may be more properly said, composes it wholly, from the wrecks of the rocky summits which have been detached from the adjacent lands; and the discoverers, therefore, were obliged to open their way through difficulties and dangers which men of iron alone could have fronted and overcome. Sometimes they had to penetrate through thick entangled woods, sometimes to cross lakes, where men and burdens perished miserably; then a rugged hill presented itself before them; and next, perhaps, a deep and yawning precipice to descend; while, at every step, they were opposed by deep and rapid rivers, passable only by means of frail barks, or slight and trembling bridges; from time to time they had to make their way through opposing Indians, who, tho always conquered, were always to be dreaded; and, above all, came the failure of provisions--which formed an aggregate, with toil, anxiety, and danger, such as was sufficient to break down bodily strength and depress the mind....