'But,' said Huldbrand, 'you know well that if I go I will not leave you behind.'

'I do not think you will leave me, Huldbrand. Yet carry me across to yonder little island, for there I will tell to you the story of the maiden you have made your wife. It may be that when you have heard it, you will ride away alone into the wide world.'

Then silently the knight carried her, as she wished, across the stream to the tiny island, and laid her down on the green grass. It was on this very spot that he had found her on the night of the terrible storm.

'Sit there, where I can look into your eyes as I tell my tale,' said his wife, 'for as I look I shall be able to see what you are thinking, nor will there be any need for you to tell me.'

'In the world,' said Undine, 'there are many beings whom mortals seldom see, for should these beings hear a mortal drawing near, they quickly hide themselves. These beings of whom I tell you are spirits that dwell in fire, earth, air and water.

'Those who dwell in the flames are called salamanders, nor do these spirits wish for any other home, as they play merrily and fearlessly among the sparkling fires.

'Deep under the earth live the gnomes, rough and fearsome spirits they, full of malice too, should any mortal cross their path.

'In lofty forests dwell more fair and joyous spirits, guarding each some well-loved spot from a mortal's heavy tread.

'And better known and better loved than these of whom I have told you are the spirits who haunt the waters. These have their home in sea or lake, in river or in little brook.

'Deep down under the blue waters, hidden from mortal eyes, are the palaces of the water spirits. Their walls are built of crystal and are hung with coral, their floors are paved with shining pearls.