He ordered all the passages to be watched , but it was too late , for the Prince had already glided between two rocks . He wandered for a long while through the forests , where he met nothing but fearful monsters ; he climbed rock after rock , steered his way from tree to tree , till at length he arrived at the edge of the sea , at the foot of a mountain that he remembered to have seen in the cabinet of the present , where Rosalie was held captive . Filled with joy , he made his way to the top of the mountain which pierced the clouds , and there he found a palace . He entered , and in the middle of a long gallery he discovered a crystal room , in the midst of which sat Rosalie , guarded night and day by genii . There was no door anywhere , nor any window . At this sight the Prince became more puzzled than ever , for he did not know how he was to warn Rosalie of his return . Yet it broke his heart to see her weeping from dawn till dark . One day , as Rosalie was walking up and down her room , she was surprised to see that the crystal which served for a wall had grown cloudy , as if some one had breathed on it , and , what was more , wherever she moved the brightness of the crystal always became clouded . This was enough to cause the Princess to suspect that her lover had returned . In order to set the Prince of the Air 's mind at rest she began by being very gracious to him , so that when she begged that her captivity might be a little lightened she should not be refused . At first the only favour she asked was to be allowed to walk for one hour every day up and down the long gallery . This was granted , and the Invisible Prince speedily took the opportunity of handing her the stone , which she at once slipped into her mouth . No words can paint the fury of her captor at her disappearance . He ordered the spirits of the air to fly through all space , and to bring back Rosalie wherever she might be . They instantly flew off to obey his commands , and spread themselves over the whole earth . Meantime Rosalie and the Invisible Prince had reached , hand in hand , a door of the gallery which led through a terrace into the gardens . In silence they glided along , and thought themselves already safe , when a furious monster dashed itself by accident against Rosalie and the Invisible Prince , and in her fright she let go his hand . No one can speak as long as he is invisible , and besides , they knew that the spirits were all around them , and at the slightest sound they would be recognised ; so all they could do was to feel about in the hope that their hands might once more meet . But , alas ! the joy of liberty lasted but a short time .
The Princess , having wandered in vain up and down the forest , stopped at last on the edge XXXXX a fountain .
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