And Jim would stagger doggedly past me, where I sat on the parapet, his poor cheeks shaking and the tail of his bath robe wrapping itself around his legs. Yes, he ran in the bath robe in deference to me. It seems there isn't much to a running suit.

"Head up," Flannigan would say. "Lift your knees, sir. Didn't you ever see a horse with string halt?"

He let him stop finally, and gave him a moment to get his breath. Then he set him to turning somersaults. They spread the cushions from the couch in the tent on the roof, and Jim would poke his head down and say a prayer, and then curve over as gracefully as a sausage and come up gasping, as if he had been pushed off a boat.

"Five pounds a day; not less, sir," Flannigan said encouragingly.

"You'll drop it in chunks."

Jim looked at the tin as if he expected to see the chunks lying at his feet.

"Yes," he said, wiping the back of his neck. "If we're in here thirty days that will be one hundred and fifty pounds. Don't forget to stop in time, Flannigan. I don't want to melt away like a candle."

He was cheered, however, by the promise of reduction.

"What do you think of that, Kit?" he called to me. "Your uncle is going to look as angular as a problem in geometry. I'll--I'll be the original reductio ad absurdum. Do you want me to stand on my head, Flannigan?

Wouldn't that reduce something?"

"Your brains, sir," Flannigan retorted gravely, and presented a pair of boxing gloves. Jim visibly quailed, but he put them on.

"Do you know, Flannigan," he remarked, as he fastened them, "I'm thinking of wearing these all the time. They hide my character."

Flannigan looked puzzled, but he did not ask an explanation. He demanded that Jim shed the bath robe, which he finally did, on my promise to watch the sunset. Then for fully a minute there was no sound save of feet running rapidly around the roof, and an occasional soft thud. Each thud was accompanied by a grunt or two from Jim. Flannigan was grimly silent. Once there was a smart rap, an oath from the policeman, and a mirthless chuckle from Jim. The chuckle ended in a crash, however, and I turned. Jim was lying on his back on the roof, and Flannigan was wiping his ear with a towel. Jim sat up and ran his hand down his ribs.

"They're all here," he observed after a minute. "I thought I missed one."

"The only way to take a man's weight down," Flannigan said dryly.

Jim got up dizzily.

"Down on the roof, I suppose you mean," he said.

The next proceedings were mysterious. Flannigan rolled the barrel into the tent, and carried in a small gla.s.s lamp. With the material at hand he seemed to be effecting a combination, no new one, to judge by his facility. Then he called Jim.

At the door of the tent Jim turned to me, his bathrobe toga fashion around his shoulders.

"This is a very essential part of the treatment," he said solemnly. "The exercise, according to Flannigan, loosens up the adipose tissue. The next step is to boil it out. I hope, unless your instructions compel you, that you will at least have the decency to stay out of the tent."

"I am going at once," I said, outraged. "I'm not here because I'm mad about it, and you know it. And don't pose with that bath robe. If you think you're a character out of Roman history, look at your legs."

"I didn't mean to offend you," he said sulkily. "Only I'm tired of having you choked down my throat every time I open my mouth, Kit. And don't go just yet. Flannigan is going for my clothes as soon as he lights the--the lamp, and--somebody ought to watch the stairs."

That was all there was to it. I said I would guard the steps, and Flannigan, having ignited the combination, whatever it was, went downstairs. How was I to know that Bella would come up when she did? Was it my fault that the lamp got too high, and that Flannigan couldn't hear Jim calling? Or that just as Bella reached the top of the steps Jim should come to the door of the tent, wearing the barrel part of his hot-air cabinet, and yelling for a doctor?

Bella came to a dead stop on the upper step, with her mouth open. She looked at Jim, at the inadequate barrel, and from them she looked at me.

Then she began to laugh, one of her hysterical giggles, and she turned and went down again. As Jim and I stared at each other we could hear her gurgling down the hall below.

She had violent hysterics for an hour, with Anne rubbing her forehead and Aunt Selina burning a feather out of the feather duster under her nose. Only Jim and I understood, and we did not tell. Luckily, the next thing that occurred drove Bella and her nerves from everybody's mind.

At seven o'clock, when Bella had dropped asleep and everybody else was dressed for dinner, Aunt Selina discovered that the house was cold, and ordered Dal to the furnace.

It was Dal's day at the furnace; Flannigan had been relieved of that part of the work after twice setting fire to a chimney.

In five minutes Dal came back and spoke a few words to Max, who followed him to the bas.e.m.e.nt, and in ten minutes more Flannigan puffed up the steps and called Mr. Harbison.

I am not curious, but I knew that something had happened. While Aunt Selina was talking suffrage to Anne--who said she had always been tremendously interested in the subject, and if women got the suffrage would they be allowed to vote?--I slipped back to the dining room.

The table was laid for dinner, but Flannigan was not in sight. I could hear voices from somewhere, faint voices that talked rapidly, and after a while I located the sounds under my feet. The men were all in the bas.e.m.e.nt, and something must have happened. I flew back to the bas.e.m.e.nt stairs, to meet Mr. Harbison at the foot. He was grimy and dusty, with streaks of coal dust over his face, and he had been examining his revolver. I was just in time to see him slip it into his pocket.

"What is the matter?" I demanded. "Is any one hurt?"

"No one," he said coolly. "We've been cleaning out the furnace."

"With a revolver! How interesting--and unusual!" I said dryly, and slipped past him as he barred the way. He was not pleased; I heard him mutter something and come rapidly after me, but I had the voices as a guide, and I was not going to be turned back like a child. The men had gathered around a low stone arch in the furnace room, and were looking down a short flight of steps, into a sort of vault, evidently under the pavement. A faint light came from a small grating above, and there was a close, musty smell in the air.

"I tell you it must have been last night," Dallas was saying. "Wilson and I were here before we went to bed, and I'll swear that hole was not there then."

"It was not there this morning, sir," Flannigan insisted. "It has been made during the day."

"And it could not have been done this afternoon," Mr. Harbison said quietly. "I was fussing with the telephone wire down here. I would have heard the noise."

Something in his voice made me look at him, and certainly his expression was unusual. He was watching us all intently while Dallas pointed out to me the cause of the excitement. From the main floor of the furnace room, a flight of stone steps surmounted by an arch led into the coal cellar, beneath the street. The coal cellar was of brick, with a cement floor, and in the left wall there gaped an opening about three feet by three, leading into a cavernous void, perfectly black--evidently a similar vault belonging to the next house.

The whole place was ghostly, full of shadows, shivery with possibilities. It was Mr. Harbison finally who took Jim's candle and crawled through the aperture. We waited in dead silence, listening to his feet crunching over the coal beyond, watching the faint yellow light that came through the ragged opening in the wall. Then he came back and called through to us.

"Place is locked, over here," he said. "Heavy oak door at the head of the steps. Whoever made that opening has done a prodigious amount of labor for nothing."

The weapon, a crowbar, lay on the ground beside the bricks, and he picked it up and balanced it on his hand. Dallas' florid face was almost comical in his bewilderment; as for Jimmy--he slammed a piece of slag at the furnace and walked away. At the door he turned around.

"Why don't you accuse me of it?" he asked bitterly. "Maybe you could find a lump of coal in my pockets if you searched me."

He stalked up the stairs then and left us. Dallas and I went up together, but we did not talk. There seemed to be nothing to say. Not until I had closed and locked the door of my room did I venture to look at something that I carried in the palm of my hand. It was a watch, not running--a gentleman's flat gold watch, and it had been hanging by its fob to a nail in the bricks beside the aperture.

In the back of the watch were the initials, T.H.H. and the picture of a girl, cut from a newspaper.

It was my picture.

Chapter XVI. I FACE FLANNIGAN

Dinner waited that night while everybody went to the coal cellar and stared at the hole in the wall, and watched while Max took a tracing of it and of some footprints in the coal dust on the other side.

I did not go. I went into the library with the guilty watch in the fold of my gown, and found Mr. Harbison there, staring through the February gloom at the blank wall of the next house, and quite unconscious of the reporter with a drawing pad just below him in the area-way. I went over and closed the shutters before his very eyes, but even then he did not move.

"Will you be good enough to turn around?" I demanded at last.

"Oh!" he said wheeling. "Are YOU here?"