The history of prince Slugobyl;Or, the invisible knight

There was once a king who had an only son, called Prince Slugobyl. Now this young prince loved nothing better than travelling; so fond of it was he that when he was twenty years old he gave his father no rest until he allowed him to go on a long journey, in short, to travel all over the world. Thus he hoped to see many beautiful and strange things, to meet with marvellous adventures, to gain happiness, knowledge, and wisdom, and to return a better man in every way than when he left. Fearing his youth and want of experience might lead him astray, his father sent with him a valued and faithful servant. When all was ready, Slugobyl bade the king adieu and set off to visit the land of his dreams.

As he was jogging along, allowing his horse to go at its own pace, he saw a beautiful white swan pursued by an eagle about to pounce down upon it. Seizing his crossbow, he took such good aim that the eagle fell dead at his feet. The rescued swan stopped in its flight, and turning round said to him, “Valiant Prince Slugobyl, it is not a mere swan who thanks you for your most timely help, but the daughter of the Invisible Knight, who, to escape the pursuit of the giant Kostey, has changed herself into a swan. My father will gladly be of service to you in return for this kindness to me. When in need of his help, you only have to say three times, ‘Invisible Knight, come to me.’”

Having thus spoken the swan flew away. The prince looked after her for a long time, and then continued his journey. He travelled on and on and on, over high mountains, through dark forests, across barren deserts, and so to the middle of a vast plain where every green thing had been burnt up by the rays of the sun. Not a single tree, not even a bush or a plant of any kind was to be seen. No bird was heard to sing, no insect to hum, no breath of air to stir the stillness of this land of desolation. Having ridden for some hours, the prince began to suffer terribly from thirst; so, sending his servant in one direction, he himself went in another, in search of some well or spring.