“How much do you know?” he asked at last, without raising his head.

“I saw you together last night.”

“Does anyone else beside your friend know?”

“I have spoken to no one.”

The Duke took a pen in his quivering fingers and opened his check-book.

“I shall be as good as my word, Mr. Holmes. I am about to write your check, however unwelcome the information which you have gained may be to me. When the offer was first made, I little thought the turn which events might take. But you and your friend are men of discretion, Mr. Holmes?”

“I hardly understand your Grace.”

“I must put it plainly, Mr. Holmes. If only you two know of this incident, there is no reason why it should go any farther. I think twelve thousand pounds is the sum that I owe you, is it not?”

But Holmes smiled and shook his head.

“I fear, your Grace, that matters can hardly be arranged so easily. There is the death of this schoolmaster to be accounted for.”

“But James knew nothing of that. You cannot hold him responsible for that. It was the work of this brutal ruffian whom he had the misfortune to employ.”

“I must take the view, your Grace, that when a man embarks upon a crime, he is morally guilty of any other crime which which may spring from it.”

“Morally, Mr. Holmes. No doubt you are right. But surely not in the eyes of the law. A man cannot be condemned for a murder at which he was not present, and which he loathes and abhors as much as you do. The instant that he heard of it he made a complete confession to me, so filled was he with horror and remorse. He lost not an hour in breaking entirely with the murderer. Oh, Mr. Holmes, you must save him — you must save him! I tell you that you must save him!” The Duke had dropped the last attempt at self-command, and was pacing the room with a convulsed face and with his clenched hands raving in the air. At last he mastered himself and sat down once more at his desk. “I appreciate your conduct in coming here before you spoke to anyone else,” said he. “At least, we may take counsel how far we can minimize this hideous scandal.”

“Exactly,” said Holmes. “I think, your Grace, that this can only be done by absolute frankness between us. I am disposed to help your Grace to the best of my ability, but, in order to do so, I must understand to the last detail how the matter stands. I realize that your words applied to Mr. James Wilder, and that he is not the murderer.”

“No, the murderer has escaped.”

Sherlock Holmes smiled demurely.

“Your Grace can hardly have heard of any small reputation which I possess, or you would not imagine that it is so easy to escape me. Mr. Reuben Hayes was arrested at Chesterfield, on my information, at eleven o’clock last night. I had a telegram from the head of the local police before I left the school this morning.”

The Duke leaned back in his chair and stared with amazement at my friend.

Our interest is in a smiling, sparkling face to be seen amid the members of the Horticultural Committee; in the person with a flower in his belt, combed and brushed, and all clad in scarlet, -- a colour which makes his black hair and yellow skin stand out in violent contrast.

This hero, radiant with rapturous joy, who had the distinguished honour of making the people forget the speech of Van Systens, and even the presence of the Stadtholder, was Isaac Boxtel, who saw, carried on his right before him, the black tulip, his pretended daughter; and on his left, in a large purse, the hundred thousand guilders in glittering gold pieces, towards which he was constantly squinting, fearful of losing sight of them for one moment.

Now and then Boxtel quickened his step to rub elbows for a moment with Van Systens. He borrowed a little importance from everybody to make a kind of false importance for himself, as he had stolen Rosa's tulip to effect his own glory, and thereby make his fortune.

Another quarter of an hour and the Prince will arrive and the procession will halt for the last time; after the tulip is placed on its throne, the Prince, yielding precedence to this rival for the popular adoration, will take a magnificently emblazoned parchment, on which is written the name of the grower; and his Highness, in a loud and audible tone, will proclaim him to be the discoverer of a wonder; that Holland, by the instrumentality of him, Boxtel, has forced Nature to produce a black flower, which shall henceforth be called Tulipa nigra Boxtellea.

From time to time, however, Boxtel withdrew his eyes for a moment from the tulip and the purse, timidly looking among the crowd, for more than anything he dreaded to descry there the pale face of the pretty Frisian girl.

She would have been a spectre spoiling the joy of the festival for him, just as Banquo's ghost did that of Macbeth.

And yet, if the truth must be told, this wretch, who had stolen what was the boast of man, and the dowry of a woman, did not consider himself as a thief. He had so intently watched this tulip, followed it so eagerly from the drawer in Cornelius's dry-room to the scaffold of the Buytenhof, and from the scaffold to the fortress of Loewestein; he had seen it bud and grow in Rosa's window, and so often warmed the air round it with his breath, that he felt as if no one had a better right to call himself its producer than he had; and any one who would now take the black tulip from him would have appeared to him as a thief.

Yet he did not perceive Rosa; his joy therefore was not spoiled.

In the centre of a circle of magnificent trees, which were decorated with garlands and inscriptions, the procession halted, amidst the sounds of lively music, and the young damsels of Haarlem made their appearance to escort the tulip to the raised seat which it was to occupy on the platform, by the side of the gilded chair of his Highness the Stadtholder.

And the proud tulip, raised on its pedestal, soon overlooked the assembled crowd of people, who clapped their hands, and made the old town of Haarlem re-echo with their tremendous cheers.