“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 may spring from 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.

"Did not he offer to you tulip bulbs by hundreds?"

"Indeed he did."

"Accept two or three, and, along with them, you may grow the third sucker."

"Yes, that would do very well," said Cornelius, knitting his brow; "if your father were alone, but there is that Master Jacob, who watches all our ways."

"Well, that is true; but only think! you are depriving yourself, as I can easily see, of a very great pleasure."

She pronounced these words with a smile, which was not altogether without a tinge of irony.

Cornelius reflected for a moment; he evidently was struggling against some vehement desire.

"No!" he cried at last, with the stoicism of a Roman of old, "it would be a weakness, it would be a folly, it would be a meanness! If I thus give up the only and last resource which we possess to the uncertain chances of the bad passions of anger and envy, I should never deserve to be forgiven. No, Rosa, no; to-morrow we shall come to a conclusion as to the spot to be chosen for your tulip; you will plant it according to my instructions; and as to the third sucker," -- Cornelius here heaved a deep sigh, -- "watch over it as a miser over his first or last piece of gold; as the mother over her child; as the wounded over the last drop of blood in his veins; watch over it, Rosa! Some voice within me tells me that it will be our saving, that it will be a source of good to us."

"Be easy, Mynheer Cornelius," said Rosa, with a sweet mixture of melancholy and gravity, "be easy; your wishes are commands to me."

"And even," continued Van Baerle, warming more and more with his subject, "if you should perceive that your steps are watched, and that your speech has excited the suspicion of your father and of that detestable Master Jacob, -- well, Rosa, don't hesitate for one moment to sacrifice me, who am only still living through you, -- me, who have no one in the world but you; sacrifice me, -- don't come to see me any more."

Rosa felt her heart sink within her, and her eyes were filling with tears.

"Alas!" she said.

"What is it?" asked Cornelius.

"I see one thing."

"What do you see?"

"I see," said she, bursting out in sobs, "I see that you love your tulips with such love as to have no more room in your heart left for other affections."

Saying this, she fled.

Cornelius, after this, passed one of the worst nights he ever had in his life.

Rosa was vexed with him, and with good reason. Perhaps she would never return to see the prisoner, and then he would have no more news, either of Rosa or of his tulips.

We have to confess, to the disgrace of our hero and of floriculture, that of his two affections he felt most strongly inclined to regret the loss of Rosa; and when, at about three in the morning, he fell asleep overcome with fatigue, and harassed with remorse, the grand black tulip yielded precedence in his dreams to the sweet blue eyes of the fair maid of Friesland.

But poor Rosa, in her secluded chamber, could not have known of whom or of what Cornelius was dreaming.

From what he had said she was more ready to believe that he dreamed of the black tulip than of her; and yet Rosa was mistaken.