But there was difference enough between them both to keep up the novelty of their intercourse, at the same time rendering it rather difficult. Nearly all the difficulties proceeded from Rendalen, for Kallem was more pliable and accommodating. When Rendalen was in the humor, he would play by the hour together, just as though no one were in the room; one might make up one's mind to go away at once. He it was who always gave the keynote to all their moods. He was capricious and could have long spells of melancholy; when one of these fits was on him few could get a word out of him. There was a marvellous power of work in him whenever he was taken up about anything that occupied his mind--and then suddenly, good-by to the whole thing! Were he in a communicative mood and really in good spirits, the very air around him seemed sparkling with electricity. For Kallem the study of medicine meant fresh discoveries daily, and on account of their mutual physiological studies they both faithfully interchanged ideas, each from his side. During the months of January and February they met nearly every evening; at any rate, at the gymnasium from six to seven o'clock; after that they would often sup together--oftenest at Rendalen's rooms, as he had a piano. In the early part of March Rendalen's mother came to pay him a visit; she lodged with her son's landlord, a new-comer to the town. He was a native of Norland, blind and paralysed down one side, and had an excessively musical wife; she was very young, in fact almost a child--the strangest couple imaginable. Rendalen often spoke of them. As long as his friend's mother was in town, Kallem kept away; each time they left the gymnasium, Kallem could see that Rendalen did not wish to have him with him. But when, after a stay of eight days or so, the mother went home again, still things did not change; either Rendalen went on with his gymnastics longer than Kallem, or else he left after a very few exercises; it was clear that he did not wish for Kallem's company. The latter thought that he was in one of his melancholy moods. But one morning, Kallem having come home earlier than usual (as a rule he was out the whole forenoon), he heard the bell ring, the servant open the door, and then Rendalen's footstep in the passage. He came in hurriedly, was gloomy and taciturn; his business was--should they change lodgings? Kallem knew him so well now, and was so good-natured, that he did not show the least surprise, and never even asked his reasons for wishing to change; he only said that his two small rooms would surely not be large enough for Rendalen's collections and his piano--and for Vangen? Or, were he and Vangen no longer going to live together? Yes, they were! But there was a large room adjoining Kallem's two rooms, and for long Rendalen had had his eye on that. He knew the landlady would be glad to let it. It would suit him perfectly. Only fancy what it would be to play in that large room!