There were two incidents during the course of the meal of which Hans Castorp took note, so far as his condition permitted. One was the banging of the glass door, which occurred while they were having the fish course. Hans Castorp gave an exasperated shrug and angrily resolved that this time he really must find out who did it. He said this not only within himself, his lips formed the words. “I must find out,” he whispered with exaggerated earnestness. Miss Robinson and the schoolmistress both looked at him in surprise. He turned the whole upper half of his body to the left and opened wide his bloodshot blue eyes.