The servants, who loved their mistress, hastened to obey her commands. A huge stone was carried into the court, and was just about to be placed on the fountain when Bertalda came hurriedly to the spot.
'The fountain must not be closed,' she cried haughtily, 'for it is from it that water is drawn for my daily bath.'
But Undine, who on other days had often given way to the wishes of Bertalda, was to-day determined that her will should be done.
'It is I who am mistress of the castle in the absence of my lord,' she said, and her voice was firm though it was kind, 'and the fountain shall be closed as I have commanded.'
'But look,' cried Bertalda angrily, 'the water itself bubbles and heaves as though disturbed at the thought of being shut out from the glad sunshine.'
The water was indeed, as the maiden said, fretting against the stones and throwing out sudden jets as though in a violent passion.
The more excited grew the water, however, the more determined grew Undine to have her order fulfilled, and that without delay.
As for the servants, they had no wish to please the haughty Bertalda, they were even glad to disobey her when that might be.
Accordingly they no longer delayed to do the will of their gentle mistress, and the stone was soon placed securely over the opening of the fountain. Undine then bent over it and silently wrote on the top of the stone some strange letters.