The Professor looked hard into the lawyer’s eyes, as he nodded his head, without speaking, in grave assent.

They arrived in another minute at the door of the Palazzo Castelmare.  The servants ran out, and they carried him up into the chamber where, ever since that fatal Ash Wednesday morning, he had, as Fortini now well understood, been suffering a long agony of remorse, apprehension, despair, all the intensity of which it was difficult to appreciate.

Life was not yet extinct when they laid him upon his bed; and the Professor proceeded to do what the rules of his science prescribed in the all but hopeless effort to combat the attack.  But the miserable man had suffered his last in this life, and every effort to bring him back to further torture was unavailing.  Within half-an-hour after he had been brought back to his palace he breathed his last.

“It is all over with him,” said the Professor, looking up across the bed to the lawyer standing on the other side of it; “there was no possibility of prolonging his life—­happily for him, and happily for everybody connected with him, and for all of us.  Who would have thought a short month ago that such a life could have so ended?”

“The 24th of March, Signor Professore, is the anniversary on which, more fervently than on any other day of the year, I thank God for all his mercies,” said the lawyer, with grim solemnity.

“I don’t understand you, Signor Dottore; what has the 24th of March to do with this?” said Tomosarchi, staring at him.

“On the 24th of March, four-and-forty years ago, the Signora Fortini departed this life, Signor Professore.  But for that gracious disposition of Providence, who knows that his lot, or worse, might not have been mine?  From Eve downwards, Signor Professore, from Eve downwards, it is the same story—­always the same story, in one shape or another—­in one shape or another.”

The Professor, who was the lawyer’s junior by some thirty years, turned away with a shrug of the shoulders, and stepped across the room to the small escritoire near the window.  There opening, without hesitation, and with the manner of a man familiar with the place, a small concealed drawer, he called the lawyer to him.

“Just come here and look at the contents of this drawer, Signor Fortini.  There is a curious meaning in them.”

Fortini went across from the bed to the escritoire, and the Professor took from the drawer and showed to him a small coloured drawing of a human form, with just such a mark on it as had been visible on the spot of the wound which had destroyed La Bianca’s life.  He showed him also, in the same secret receptacle, a long very finely tempered needle, and a small quantity of perfectly white wax.

“Good God, Professor!  Were you aware of the existence of these things here?” cried the lawyer, aghast.