He stirs the fire briskly, takes another sip from his half emptied cup, and goes off in a reverie. Presently there comes the sound of a dog's angry barking, and soon mingled with the canine cries, the voices of men calling to one another, crying for aid. But so pleasant is his meditation, and so deep, that their sounds do not rouse him; they reach his ears, 'tis true; he has a vague sense of disagreeable sounds, but they do not break his reverie.

Something else does, however, a brisk hammering on the street door, and a loud, high pitched voice, calling:

"Heath! Heath, I say!"

He starts up, shakes himself and his ideas, together, and goes to face the intruder upon his meditations. It is his neighbor across the way.

"Heath, have you lost your ears? or your senses?" he cries, impatiently; "what the devil has your dog found, that has set these fellows in such a panic? Something's wrong; they want you to come and control the dog."

"Heath! Heath!" comes from the adjoining vacant lot; "come, for God's sake, quick!"

In another moment, Clifford Heath has seized his hat, and, followed by his neighbor, is out in the yard.

"Come this way, O'Meara," he says, quickly; "that is if you can leap the fence, it's not high," and he strides through his own grounds, scales the intervening palings, and in a few seconds is on the scene.

On the scene! At the edge of the old cellar, one of the men recently denominated, "poor devils," by the musing doctor, is gesticulating violently, and urging him forward with lips that are pale with terror.

Down in the old cellar, the second man, paler still than the first, is making futile efforts to draw the dog away from something, at which he is clawing and tearing, barking furiously all the time.