"Surely, " he thought, "they cannot have been at it all the time I was reading. Had they been, I must have noticed it!" Presently, when the noise increased, he satisfied himself that it was really new. It was evident that at first the rats had been frightened at the presence of a stranger, and the light of fire and lamp; but that as the time went on they had grown bolder and were now disporting themselves as was their wont.
How busy they were! Ａnd hark to the strange noises! Up and down behind the old wainscot, over the ceiling and under the floor they raced, and gnawed, and scratched! Malcolmson smiled to himself as he recalled to mind the saying of Mrs. Dempster, "Bogies is rats, and rats is bogies!" The tea began to have its effect of intellectual and nervous stimulus, he saw with joy another long spell of work to be done before the night was past, and in the sense of security which it gave him, he allowed himself the luxury of a good look round the room. He took his lamp in one hand, and went all around, wondering that so quaint and beautiful an old house had been so long neglected. The carving of the oak on the panels of the wainscot was fine, and on and round the doors and windows it was beautiful and of rare merit. There were some old pictures on the walls, but they were coated so thick with dust and dirt that he could not distinguish any detail of them, though he held his lamp as high as he could over his head. Here and there as he went round he saw some crack or hole blocked for a moment by the face of a rat with its bright eyes glittering in the light, but in an instant it was gone, and a squeak and a scamper followed. The thing that most struck him, however, was the rope of the great alarm bell on the roof, which hung down in a corner of the room on the right-hand side of the fireplace. He pulled up close to the hearth a great high-backed carved oak chair, and sat down to his last cup of tea. When this was done he made up the fire, and went back to his work, sitting at the corner of the table, having the fire to his left. For a little while the rats disturbed him somewhat with their perpetual scampering, but he got accustomed to the noise as one does to the ticking of a clock or to the roar of moving water, and he became so immersed in his work that everything in the world, except the problem which he was trying to solve, passed away from him.
He suddenly looked up, his problem was still unsolved, and there was in the air that sense of the hour before the dawn, which is so dread to doubtful life. The noise of the rats had ceased. Indeed it seemed to him that it must have ceased but lately and that it was the sudden cessation which had disturbed him. The fire had fallen low, but still it threw out a deep red glow. As he looked he started in spite of his sang froid.
There on the great high-backed carved oak chair by the right side of the fireplace sat an enormous rat, steadily glaring at him with baleful eyes. He made a motion to it as though to hunt it away, but it did not stir. Then he made the motion of throwing something. Still it did not stir, but showed its great white teeth angrily, and its cruel eyes shone in the lamplight with an added vindictiveness.
Malcolmson felt amazed, and seizing the poker from the hearth ran at it to kill it. Before, however, he could strike it, the rat, with a squeak that sounded like the concentration of hate, jumped upon the floor, and, running up the rope of the alarm bell, disappeared in the darkness beyond the range of the green-shaded lamp. Instantly, strange to say, the noisy scampering of the rats in the wainscot began again.
By this time Malcolmson's mind was quite off the problem; and as a shrill cock-crow outside told him of the approach of morning, he went to bed and to sleep.
He slept so sound that he was not even waked by Mrs. Dempster coming in to make up his room. It was only when she had tidied up the place and got his breakfast ready and tapped on the screen which closed in his bed that he woke. He was a little tired still after his night's hard work, but a strong cup of tea soon freshened him up and, taking his book, he went out for his morning walk, bringing with him a few sandwiches lest he should not care to return till dinnertime. He found a quiet walk between high elms some way outside the town, and here he spent the greater part of the day studying his Laplace. On his return he looked in to see Mrs. Witham and to thank her for her kindness. When she saw him coming through the diamond-paned bay window of her sanctum she came out to meet him and asked him in. She looked at him searchingly and shook her head as she said:
"You must not overdo it, sir. You are paler this morning than you should be. Too late hours and too hard work on the brain isn' t good for any man! But tell me, sir, how did you pass the night? Well, I hope? But my heart! sir, I was glad when Mrs. Dempster told me this morning that you were all right and sleeping sound when she went in."
"Oh, I was all right, " he answered, smiling, "the 'something' didn' t worry me, as yet. Only the rats; and they had a circus, I tell you, all over the place. There was one wicked-looking old devil that sat up on my own chair by the fire, and wouldn' t go till I took the poker to him, and then he ran up the rope of the alarm bell and got to somewhere up the wall or the ceiling—I couldn' t see where, it was so dark."
"Mercy on us, " said Mrs. Witham, "an old devil, and sitting on a chair by the fireside! Take care, sir! take care! There' s many a true word spoken in jest."
"How do you mean? Pon my word I don' t understand."