As he did so, a strange sense of foreboding came upon him and the vision of the baboon rushed back to his mind. He shook himself in annoyance and resumed his work.

But he could not regain his ease of mind, and after spending nearly an hour in a vain attempt to concentrate on some problems in algebra he closed up his books impatiently and sought his hat and coat.

He stood irresolutely in the hallway for some moments, and then, with a laugh, opened a drawer and drew forth a revolver, which he slipped into his overcoat pocket, after seeing that all its chambers were filled. He laughed again as he descended to the street, but drew some comfort, nevertheless, from the touch of the cold steel upon his hand.

VI.

THE night was dark, but the air was clear and invigorating. Meldrum walked smartly in a direction away from Needham’s residence, since he was earlier than usual and had but plenty of time to meet Norton. Finding that he could not free his mind from an unaccountable anxiety, he swung round presently and made his way to North Avenue.

It did not take him long to reach the house, and as he drew near he observed, with a slight feeling of surprise, that one of the downstairs rooms was illuminated—a room he had never yet seen lighted. It lay toward the rear of the house, its windows facing a broad gallery.

Obeying a sudden impulse, Meldrum, instead of going to the front door, walked quietly along the gallery and peeped through a corner of the blind into the room. What he saw there made his blood run cold.

The room was about fifteen feet square, with blue paper on the walls and plain oak furniture. A square table stood in the center at which several figures were seated. Needham sat with his back to the window, and in the chair on his left sat Norton, a pile of postage stamps on the table before him, and over opposite Needham, directly facing the window, sat, or rather sprawled, the figure of the gray baboon!

On the table was a decanter of whisky, and all three had tumblers. Norton’s glass was half empty, standing beside the postage stamps, but Needham and the creature were both drinking, the animal seemingly following the movements of the man, lifting the tumbler to its lips and setting it down again as Needham did, as far as Meldrum could judge by the movements of his right arm, which was visible. The brute’s eyes were fixed upon the man across the table, and from its appearance and the limpness of its figure Meldrum decided it was in an advanced state of intoxication.

Norton seemed to be spellbound, staring fixedly at the scene before him. Occasionally he passed his hand in a bewildered way over his forehead, or looked stupidly at the half empty tumbler before him. But he seemed incapable of either speech or action.