The cloud sailed away, and took them to a part of the sky which Hilda had never seen before. It was full of a strange white light, and no darkness ever came there. On went the cloud, moving slowly but steadily, like a great ship steering its way amidst the sky. The kingdom of the Air Spirits soon loomed in sight. Rainbow bridges spanned its shining rivers; its forests were like the tracery of the Northern Lights; and the houses and palaces in which the people lived were stars of different sizes, along whose rays was the only path to get to them. At length the cloud entered the harbour, and, letting down an anchor of raindrops, its motion ceased. 'You must go the rest of the way alone, Hilda,' said the cat. 'I shall wait for you, and you will find me here on your return.' 'But which way am I to go, and what am I to do?' asked Hilda in a tremulous tone; for being so high above the earth almost took her breath away. 'You must ask the first Air Spirit you meet to show you the star where the Queen lives, and then you must get there the best way you can,' Tom replied. 'When you have found her you must ask her for the Diamond Waterdrop. But be very careful not to sit down, however much you may be tempted to do so; for if you do, your little brother Hector never can be saved.' Hilda did not much like the idea of making so perilous a journey as this promised to be, without even the cat to go with her; but since it was for Hector's sake she never dreamed of refusing: only she made up her mind on no account to sit down, no matter what happened. She bade Tom farewell, therefore, and walked off. She had not gone far when she met an Air Spirit, carrying its nose in the air--as, of course, all Air Spirits do. 'Can you tell me which star the Queen sits in?' Hilda asked. 'What do you want of the Queen?' inquired the Air Spirit superciliously. 'I want to ask her where the Diamond Waterdrop is,' answered Hilda. 'You will never get on in this country unless you carry your nose more in the air than you do,' observed the Air Spirit. 'As for her Majesty, she sits in the large star up yonder with the white ray. Mind you don't break your neck. Ta-ta!' Hilda went onward very disconsolately. As to carrying her nose in the air she had never in her life felt less inclined to do such a thing. By and by she came to the spot where the white ray of light from the Queen's star touched the solid air. A number of Air Spirits were walking up and down it like so many tight-rope dancers. 'Look at that absurd child!' they said to one another. 'See how she hangs her head! Why doesn't she put on airs? She will never come to anything.' Hilda began to climb up the long white ray; and though at first she was very much frightened, by degrees she gained courage, and at last she was able to walk along tolerably fast. But it was a long distance to the top, and by the time she got there she was almost ready to drop with fatigue.