In another moment some one dropped out of the window, and he was
upset most unceremoniously.

The person, whoever it was, had landed on his head and shoulders, and
he was thrown down in an instant.

"Hello! who is that?" he exclaimed, as he felt himself lying on the
bare and rather damp ground.

Some one was struggling to his feet with a startled exclamation, and
Billy snatched quickly at him, and caught a leg or an arm, he could
not be certain which.

"I've got you now!" he cried, "and you've got to give an account of
yourself, my man!"

The stranger, whoever he was, certainly did give an account of
himself, but not in the manner which Billy meant.

There was a sudden shooting out of a brawny fist, and Billy was taken
between the eyes, and for a moment saw stars.

"Ouch!" he ejaculated, letting go of the person he had seized,

Then somebody rolled him over with a quick move of the foot, and by
the time the unfortunate joker arose his nocturnal combatant was out
of sight, as well as hearing.

"H'm! that's too bad!" sputtered Billy. "I don't know now whether