Making no delay, Dermat set out to walk across the plain. He had not been long walking when he saw, right before him, a great tree laden with fruit, overtopping all the other trees of the plain. It was surrounded at a little distance by a circle of pillar-stones; and one stone, taller than the others, stood in the centre near the tree. Beside this pillar-stone was a spring well, with a large, round pool as clear as crystal; and the water bubbled up in the centre, and flowed away towards the middle of the plain in a slender stream. Dermat was glad when he saw the well; for he was hot and thirsty after climbing up the cliff. He stooped down to take a drink; but before his lips touched the water, he heard the heavy tread of a body of warriors, and the loud clank of arms, as if a whole host were coming straight down on him. He sprang to his feet and looked round; but the noise ceased in an instant, and he could see nothing. After a little while he stooped again to drink; and again, before he had wet his lips, he heard the very same sounds, nearer and louder than before. A second time he leaped to his feet; and still he saw no one. He knew not what to think of this; and as he stood wondering and perplexed, he happened to cast his eyes on the tall pillar-stone that stood on the brink of the well; and he saw on its top a large, beautiful drinking-horn, chased with gold and enamelled with precious stones. "Now surely," said Dermat, "I have been doing wrong; it is, no doubt, one of the virtues of this well that it will not let any one drink of its waters except from the drinking-horn." So he took down the horn, dipped it into the well, and drank without hindrance, till he had slaked his thirst. Scarcely had he taken the horn from his lips, when he saw a tall wizard-champion[CV.] coming towards him from the east, clad in a complete suit of mail, and fully armed with shield and helmet, sword and spear. A beautiful scarlet mantle hung over his armour, fastened at his throat by a golden brooch; and a broad circlet of sparkling gold was bended in front across his forehead, to confine his yellow hair, and keep it from being blown about by the wind. As he came nearer, he increased his pace, moving with great strides; and Dermat now observed that he looked very wrathful. He offered no greeting, and showed not the least courtesy; but addressed Dermat in a rough, angry voice-- "Surely, Dermat O'Dyna, Erin of the green plains should be wide enough for you; and it contains abundance of clear, sweet water in its crystal springs and green bordered streams, from which you might have drunk your fill. But you have come into my island without my leave, and you have taken my drinking-horn, and have drunk from my well; and this spot you shall never leave till you have given me satisfaction for the insult."