The work was hard at best, for it is very warm underground; but it was not particularly unpleasant, and some of the miners, when they wanted to earn a little more money for a particular purpose, would stop behind the rest and work all night. But you could not tell night from day down there, except from feeling tired and sleepy; for no light of the sun ever came into those gloomy regions. Some who had thus remained behind during the night, although certain there were none of their companions at work, would declare the next morning that they heard, every time they halted for a moment to take breath, a tap-tapping all about them, as if the mountain were then more full of miners than ever it was during the day; and some in consequence would never stay overnight, for all knew those were the sounds of the goblins. They worked only at night, for the miners' night was the goblins' day. Indeed, the greater number of the miners were afraid of the goblins; for there were strange stories well known amongst them of the treatment some had received whom the goblins had surprised at their work during the night. The more courageous of them, however, amongst them Peter Peterson and Curdie, who in this took after his father, had stayed in the mine all night again and again, and although they had several times encountered a few stray goblins, had never yet failed in driving them away. As I have indicated already, the chief defence against them was verse, for they hated verse of every kind, and some kinds they could not endure at all. I suspect they could not make any themselves, and that was why they disliked it so much. At all events, those who were most afraid of them were those who could neither make verses themselves nor remember the verses that other people made for them; while those who were never afraid were those who could make verses for themselves; for although there were certain old rhymes which were very effectual, yet it was well known that a new rhyme, if of the right sort, was even more distasteful to them, and therefore more effectual in putting them to flight. Perhaps my readers may be wondering what the goblins could be about, working all night long, seeing they never carried up the ore and sold it; but when I have informed them concerning what Curdie learned the very next night, they will be able to understand. For Curdie had determined, if his father would permit him, to remain there alone this night--and that for two reasons: first, he wanted to get extra wages that he might buy a very warm red petticoat for his mother, who had begun to complain of the cold of the mountain air sooner than usual this autumn; and second, he had just a faint hope of finding out what the goblins were about under his window the night before. When he told his father, he made no objection, for he had great confidence in his boy's courage and resources.