“He’ll be in bed now. Still, I think you are right. But it is nearly four o’clock. I will wait until morning, and take it round before breakfast. Meanwhile, I must carry it with me to my lodgings.”

“That is the best plan,” said his friend; and the two walked on together talking of the remarkable find which they had made. When they came to Schlegel’s door, Strauss said good-by, refusing an invitation to go in, and walked briskly down the street in the direction of his own lodgings.

Schlegel was stooping down putting the key into the lock, when a strange change came over him. He trembled violently, and dropped the key from his quivering fingers. His right hand closed convulsively round the handle of the silver hatchet, and his eye followed the retreating figure of his friend with a vindictive glare. In spite of the coldness of the night the perspiration streamed down his face. For a moment he seemed to struggle with himself, holding his hand up to his throat as if he were suffocating. Then, with crouching body and rapid, noiseless steps, he crept after his late companion.

Strauss was plodding sturdily along through the snow, humming snatches of a student song, and little dreaming of the dark figure which pursued him. At the Grand Platz it was forty yards behind him; at the Julien Platz it was but twenty; in Stephen Strasse it was ten, and gaining on him with panther-like rapidity. Already it was almost within arm’s length of the unsuspecting man, and the hatchet glittered coldly in the moonlight, when some slight noise must have reached Strauss’s ears, for he faced suddenly round upon his pursuer. He started and uttered an exclamation as his eye met the white set face, with flashing eyes and clenched teeth, which seemed to be suspended in the air behind him.

“What, Otto!” he exclaimed, recognising his friend. “Art thou ill? You look pale. Come with me to my—— Ah! hold, you madman, hold! Drop that axe! Drop it, I say, or by heaven I’ll choke you!”

Von Schlegel had thrown himself upon him with a wild cry and uplifted weapon; but the student was stout-hearted and resolute. He rushed inside the sweep of the hatchet and caught his assailant round the waist, narrowly escaping a blow which would have cloven his head. The two staggered for a moment in a deadly wrestle, Schlegel endeavoring to shorten his weapon; but Strauss with a desperate wrench managed to bring him to the ground, and they rolled together in the snow, Strauss clinging to the other’s right arm and shouting frantically for assistance. It was as well that he did so, for Schlegel would certainly have succeeded in freeing his arm had it not been for the arrival of two stalwart gendarmes, attracted by the uproar. Even then the three of them found it difficult to overcome the maniacal strength of Schlegel, and they were utterly unable to wrench the silver hatchet from his grasp. One of the gendarmes, however, had a coil of rope round his waist, with which he rapidly secured the student’s arms to his sides. In this way, half pushed, half dragged, he was conveyed, in spite of furious cries and frenzied struggles, to the central police station.

Strauss assisted in coercing his former friend, and accompanied the police to the station; protesting loudly at the same time against any unnecessary violence, and giving it as his opinion that a lunatic asylum would be a more fitting place for the prisoner. The events of the last half-hour had been so sudden and inexplicable that he felt quite dazed himself. What did it all mean? It was certain that his old friend from boyhood had attempted to murder him, and had nearly succeeded. Was Von Schlegel, then, the murderer of Professor von Hopstein and of the Bohemian Jew? Strauss felt that it was impossible, for the Jew was not even known to him, and the Professor had been his especial favorite. He followed mechanically to the police station, lost in grief and amazement.

Inspector Baumgarten, one of the most energetic and best known of the police officials, was on duty in the absence of the Commissary. He was a wiry little active man, quiet and retiring in his habits, but possessed of great sagacity and a vigilance which never relaxed. Now, though he had had a six hours’ vigil, he sat as erect as ever, with his pen behind his ear, at his official desk, while his friend, Sub-inspector Winkel, snored in a chair at the side of the stove. Even the inspector’s usually immovable features betrayed surprise, however, when the door was flung open and Von Schlegel was dragged in with pale face and disordered clothes, the silver hatchet still grasped firmly in his hand. Still more surprised was he when Strauss and the gendarmes gave their account, which was duly entered in the official register.

“Young man, young man,” said Inspector Baumgarten, laying down his pen and fixing his eyes sternly upon the prisoner, “this is pretty work for Christmas morning; why have you done this thing?”

“God knows!” cried Von Schlegel, covering his face with his hands and dropping the hatchet. A change had come over him; his fury and excitement were gone, and he seemed utterly prostrated with grief.