<p>"Goblin, lead them up and down."<br><br>The ruddy glow of sunset was already fading into the sombre shadows of night, when two travellers might have been observed swiftly?at a pace of six miles in the hour?descending the rugged side of a mountain; the younger bounding from crag to crag with the agility of a fawn, while his companion, whose aged limbs seemed ill at ease in the heavy chain armour habitually worn by tourists in that district, toi...