During the first few days of their voyage down the Danube they were extremely happy. Everything grew more and more beautiful as they sailed further and further down the proudly flowing stream. But in a region otherwise so pleasant, and in the enjoyment of which they had promised themselves the purest delight, the ungovernable Kuhleborn began, undisguisedly, to exhibit his power of interference. This was indeed manifested in mere teasing tricks, for Undine often rebuked the agitated waves, or the contrary winds, and then the violence of the enemy would be immediately humbled; but again the attacks would be renewed, and again Undine's reproofs would become necessary, so that the pleasure of the little party was completely destroyed. The boatmen too were continually whispering to each other in dismay, and looking with distrust at the three strangers, whose servants even began more and more to forebode something uncomfortable, and to watch their superiors with suspicious glances. Huldbrand often said to himself: "This comes from like not being linked with like, from a man uniting himself with a mermaid!" Excusing himself as we all love to do, he would often think indeed as he said this: "I did not really know that she was a sea-maiden, mine is the misfortune, that every step I take is disturbed and haunted by the wild caprices of her race, but mine is not the fault." By thoughts such as these, he felt himself in some measure strengthened, but on the other hand, he felt increasing ill-humor, and almost animosity toward Undine. He would look at her with an expression of anger, the meaning of which the poor wife understood well. Wearied with this exhibition of displeasure, and exhausted by the constant effort to frustrate Kuhleborn's artifices, she sank one evening into a deep slumber, rocked soothingly by the softly gliding bark.
Scarcely, however, had she closed her eyes than every one in the vessel imagined he saw, in whatever direction he turned, a most horrible human head; it rose out of the waves, not like that of a person swimming, but perfectly perpendicular as if invisibly supported upright on the watery surface, and floating along in the same course with the bark. Each wanted to point out to the other the cause of his alarm, but each found the same expression of horror depicted on the face of his neighbor, only that his hands and eyes were directed to a different point where the monster, half-laughing and half-threatening, rose before him. When, however, they all wished to make each other understand what each saw, and all were crying out: "Look there! No, there!" the horrible heads all at one and the same time appeared to their view, and the whole river around the vessel swarmed with the most hideous apparitions. The universal cry raised at the sight awoke Undine. As she opened her eyes, the wild crowd of distorted visages disappeared. But Huldbrand was indignant at such unsightly jugglery. He would have burst forth in uncontrolled imprecations had not Undine said to him with a humble manner and a softly imploring tone: "For God's sake, my husband, we are on the water, do not be angry with me now."
The knight was silent, and sat down absorbed in revery. Undine whispered in his ear: "Would it not be better, my love, if we gave up this foolish journey, and returned to castle Ringstetten in peace?"
But Huldbrand murmured moodily: "So I must be a prisoner in my own castle, and only be able to breathe so long as the fountain is closed! I would your mad kindred"--Undine lovingly pressed her fair hand upon his lips. He paused, pondering in silence over much that Undine had before said to him.
Bertalda had meanwhile given herself up to a variety of strange thoughts. She knew a good deal of Undine's origin, and yet not the whole, and the fearful Kuhleborn especially had remained to her a terrible but wholly unrevealed mystery. She had indeed never even heard his name. Musing on these strange things, she unclasped, scarcely conscious of the act, a gold necklace, which Huldbrand had lately purchased for her of a travelling trader; half dreamingly she drew it along the surface of the water, enjoying the light glimmer it cast upon the evening-tinted stream. Suddenly a huge hand was stretched out of the Danube, it seized the necklace and vanished with it beneath the waters. Bertalda screamed aloud, and a scornful laugh resounded from the depths of the stream. The knight could now restrain his anger no longer. Starting up, he inveighed against the river; he cursed all who ventured to interfere with his family and his life, and challenged them, be they spirits or sirens, to show themselves before his avenging sword.
Bertalda wept meanwhile for her lost ornament, which was so precious to her, and her tears added fuel to the flame of the knight's anger, while Undine held her hand over the side of the vessel, dipping it into the water, softly murmuring to herself, and only now and then interrupting her strange mysterious whisper, as she entreated her husband: "My dearly loved one, do not scold me here; reprove others if you will, but not me here. You know why!" And indeed, he restrained the words of anger that were trembling on his tongue.
Presently in her wet hand which she had been holding under the waves, she brought up a beautiful coral necklace of so much brilliancy that the eyes of all were dazzled by it.
"Take this," said she, holding it out kindly to Bertalda; "I have ordered this to be brought for you as a compensation, and don't be grieved any more, my poor child."
But the knight sprang between them. He tore the beautiful ornament from Undine's hand, hurled it again into the river, exclaiming in passionate rage: "Have you then still a connection with them? In the name of all the witches, remain among them with your presents. and leave us mortals in peace, you sorceress!"
Poor Undine gazed at him with fixed but tearful eyes, her hand still stretched out, as when she had offered her beautiful present so lovingly to Bertalda. She then began to weep more and more violently, like a dear innocent child bitterly afflicted. At last, wearied out she said:
"Alas, sweet friend, alas! farewell! They shall do you no harm; only remain true, so that I may be able to keep them from you. I must, alas! go away; I must go hence at this early stage of life. Oh woe, woe! what have you done! Oh woe, woe!"
She vanished over the side of the vessel. Whether she plunged into the stream, or flowed away with it, they knew not; her disappearance was like both and neither. Soon, however, she was completely lost sight of in the Danube; only a few little waves kept whispering, as if sobbing, round the boat, and they almost seemed to be saying: "Oh woe, woe! oh remain true! oh woe!"
Huldbrand lay on the deck of the vessel, bathed in hot tears, and a deep swoon soon cast its veil of forgetfulness over the unhappy man.