"Colonel Wetherell was summoned, and, on entering the room, looked in a startled way at the stranger, smiled vaguely, extended his hand, contracted his eyes into a long, narrow line, turned white, and throwing both arms suddenly above his head, exclaimed: 'My God! my God! what have I done? Where am I? How long has it been? Is she dead? Is she dead?' and staggered back into his father's arms.

"His distress was so manifest, that the visitor lost his severity at once, and said quite gently: 'No, she is not dead; but she is almost insane with fright, and has been so exhausted with anxiety and tears, that we had lost all hope for her reason, or even for her life, unless I could find you. I have been through the lines, was delayed by the loss of my passport, and it is now five weeks since I saw her. She is alive, but—'

"Young Wetherell sprang to his feet, and turned on his father like a madman. 'How dared you?' he demanded; 'how dared you keep back my letters? You have killed her. You have murdered her, poor, delicate girl, with anxiety and doubt of me.' And then with set teeth and white lips he advanced upon his father, his arm uplifted, as if he held a sword, and with a sweep which would have severed chords of steel, if the weapon had really been within his grasp, he brought his arm across his father's breast and sank upon the floor, senseless and still.

"Afterward, when he revived, he had no recollection of what had occurred, except alone the fact that for many weeks previous he had forgotten utterly the girl who was to be his wife, whose life and love were all his world. While he had remembered everything else, had carefully attended to the smallest details of daily life, the link of memory that held the fact of her existence had been coated with a rust of absolute oblivion. The single link in all the chain of memory that had failed him had been the one the nearest to his heart—the dearest one of all!

"They were married two months later, and he resumed command of his regiment. Through an honorable and eventful life no sign of mental lapse ever returned; but every day he dreaded it, and watched his wife and children as a man might do who saw a creeping monster back of those he loved while he stood paralyzed and dumb. He never seemed to fear that other things might lose their hold upon his consciousness; but the apprehension that his mind would slip the link which held his wife, and leave her sick and faint with anxious fears, which he alone could still, constantly haunted him.

"His wounds never troubled him again. He died not long ago. His career was an exceptionally brilliant one. You would know him if I had given his real name, for it was in the public ear for years.

"There were but six persons who ever knew the history of his case, and they are still unable to explain it—its cause, its direction, its cure. Or is it cured? Will his children be subject to it? Will it take the same form? Was it caused by the wound? by the fever? Or were hereditary conditions so grouped as to produce this mental effect, even if there had been no wound—no illness? If the latter, will it be transmitted? These questions come to me with renewed force, to-day, as I hold in my hand this letter, asking me to give the family history of Col. George Wetherell for the use of physicians in a distant city who are now treating his son. This son has reached the precise age at which his father had the strange experience of which I have just told you.

"There is a hint in the letter which, in the light of the father's malady, appears to a physician to be of peculiar importance from a medical outlook.

"We shall see, we shall see."

There was a long pause; then he asked: "Should you, a layman, look to the wound to explain the condition? Or to the Castle of Heredity? Suppose the son's malady is quite similar—as now appears—what then?"