At a sign from Kepenau we stopped; but Mike, though he had perceived us, went on fiddling.  Presently he changed the tune to one of extraordinary rapidity: this evidently astonished his vulpine audience, which began to leap about.  Suddenly he exclaimed, "Now! shout, friends, shout! and we shall put the spalpeens of wolves to flight."  As we raised our voices he made his instrument produce the most fearful shrieks and cries, while he uttered at the same time a true Irish howl.