Professor Kürtchen, a little suspicious and irritable bachelor with the airs of a comic actor and the manners of an old French chevalier, was head of the seminary. He wore a stubby grey moustache, a pair of gold spectacles in front of his restless brown eyes, and always out-of-doors a top hat on the back of his head. He stuck his belly out as he walked and held his little fists on each side of his stomach like a long-distance runner. He treated Klaus Heinrich with self-satisfied tact, but was full of suspicion of the noble arrogance of his other pupils and fired up like a tom-cat when he scented any signs of contempt for him as a commoner. He loved when out for a walk, if there were people close by, to stop and gather his pupils in a knot around him and explain something to them, drawing diagrams in the sand with his stick. He addressed Frau Amelung, the housekeeper, a captain's widow who smelt strongly of drugs, as "my lady" and showed thus that he knew what was what in the best circles. Professor Kürtchen was helped by a yet younger assistant teacher with a doctor's degree--a good-humoured, energetic man, bumptious but enthusiastic, who influenced Klaus Heinrich's views and conscience perhaps more than was good for him. A gymnastic instructor called Zotte had also been appointed. The assistant teacher, it may be remarked in passing, was called Ueberbein, Raoul Ueberbein. The rest of the staff came every day by railway from the capital. Klaus Heinrich remarked with appreciation that the demands made on him from the point of view of learning quickly abated. Schulrat Dröge's wrinkled fore-finger no longer paused on the lines, he had done his work; and during the lessons as well as while correcting his written work Professor Kürtchen seized every opportunity of showing his tact. One day, quite soon after the institution had started--it was after luncheon in the high-windowed dining-room--he summoned Klaus Heinrich into his study, and said in so many words: "It is contrary to the public interest that your Grand Ducal Highness, during our scientific studies together, should be compelled to answer questions which are at the moment unwelcome to you. On the other hand, it is desirable that your Grand Ducal Highness should continually announce your readiness to answer by holding up your hand. I beg your Grand Ducal Highness accordingly, for my own information, in the case of unwelcome questions, to stretch out your arm to its full length, but in the case of those an invitation to answer which would be agreeable to you, to raise it only half way and in a right angle."