Haunted by visions of brain fever and insanity, Marriott put on his cap and macintosh and left the house. The morning air on Arthur's Seat would blow the cobwebs from his brain; the scent of the heather, and above all, the sight of the sea. He roamed over the wet slopes above Holyrood for a couple of hours, and did not return until the exercise had shaken some of the horror out of his bones, and given him a ravening appetite into the bargain. As he entered he saw that there was another man in the room, standing against the window with his back to the light. He recognised his fellow-student Greene, who was reading for the same examination. "Read hard all night, Marriott," he said, "and thought I'd drop in here to compare notes and have some breakfast. You're out early?" he added, by way of a question. Marriott said he had a headache and a walk had helped it, and Greene nodded and said "Ah!" But when the girl had set the steaming porridge on the table and gone out again, he went on with rather a forced tone, "Didn't know you had any friends who drank, Marriott?" This was obviously tentative, and Marriott replied drily that he did not know it either. "Sounds just as if some chap were 'sleeping it off' in there, doesn't it, though?" persisted the other, with a nod in the direction of the bedroom, and looking curiously at his friend. The two men stared steadily at each other for several seconds, and then Marriott said earnestly-- "Then you hear it too, thank God!" "Of course I hear it. The door's open. Sorry if I wasn't meant to." "Oh, I don't mean that," said Marriott, lowering his voice. "But I'm awfully relieved. Let me explain. Of course, if you hear it too, then it's all right; but really it frightened me more than I can tell you. I thought I was going to have brain fever, or something, and you know what a lot depends on this exam. It always begins with sounds, or visions, or some sort of beastly hallucination, and I--" "Rot!" ejaculated the other impatiently. "What _are_ you talking about?" "Now, listen to me, Greene," said Marriott, as calmly as he could, for the breathing was still plainly audible, "and I'll tell you what I mean, only don't interrupt." And thereupon he related exactly what had happened during the night, telling everything, even down to the pain in his arm. When it was over he got up from the table and crossed the room. "You hear the breathing now plainly, don't you?" he said. Greene said he did. "Well, come with me, and we'll search the room together." The other, however, did not move from his chair. "I've been in already," he said sheepishly; "I heard the sounds and thought it was you. The door was ajar--so I went in." Marriott made no comment, but pushed the door open as wide as it would go. As it opened, the sound of breathing grew more and more distinct. "_Someone_ must be in there," said Greene under his breath.