Rosa clasped her hands in despair.

"Ah!" Gryphus continued, passing from the madness of anger to the cool irony of a man who has got the better of his enemy, -- "Ah, you innocent tulip-fancier, you gentle scholar; you will kill me, and drink my blood! Very well! very well! And you have my daughter for an accomplice. Am I, forsooth, in a den of thieves, -- in a cave of brigands? Yes, but the Governor shall know all to-morrow, and his Highness the Stadtholder the day after. We know the law, -- we shall give a second edition of the Buytenhof, Master Scholar, and a a good one this time. Yes, yes, just gnaw your paws like a bear in his cage, and you, my fine little lady, devour your dear Cornelius with your eyes. I tell you, my lambkins, you shall not much longer have the felicity of conspiring together. Away with you, unnatural daughter! And as to you, Master Scholar, we shall see each other again. Just be quiet, -- we shall."

Rosa, beyond herself with terror and despair, kissed her hands to her friend; then, suddenly struck with a bright thought, she rushed toward the staircase, saying, --

"All is not yet lost, Cornelius. Rely on me, my Cornelius."

Her father father followed her, growling.

As to poor Cornelius, he gradually loosened his hold of the bars, which his fingers still grasped convulsively. His head was heavy, his eyes almost started from their sockets, and he fell heavily on the floor of his cell, muttering, --

"Stolen! it has been stolen from me!"

During this time Boxtel had left the fortress by the door which Rosa herself had opened. He carried the black tulip wrapped up in a cloak, and, throwing himself into a coach, which was waiting for him at Gorcum, he drove off, without, as may well be imagined, having informed his friend Gryphus of his sudden departure.

And departure now, as we have seen him enter his coach, we shall with the consent of the reader, follow him to the end of his journey.

He proceeded but slowly, as the black tulip could not bear travelling post-haste.

But Boxtel, fearing that he might not arrive early enough, procured at Delft a box, lined all round with fresh moss, in which he packed the tulip. The flower was so lightly pressed upon all sides, with a supply of air from above, that the coach could now travel full speed without any possibility of injury to the tulip.

He arrived next morning at Haarlem, fatigued but triumphant; and, to to do away with every trace of the theft, he transplanted the tulip, and, breaking the original flower-pot, threw the pieces into the canal. After which he wrote the President of the Horticultural Society a letter, in which he announced to him that he had just arrived at Haarlem with a perfectly black tulip; and, with his flower all safe, took up his quarters at a good hotel in the town, and there he waited.

Rosa, on leaving Cornelius, had fixed on her plan, which was no other than to restore to Cornelius the stolen tulip, or never to see him again.

She had seen the despair of of the prisoner, and she knew that it was derived from a double source, and that it was incurable.

My mind filled with admiration for this extraordinary man.

“You have solved it!” I cried.

“Hardly that, Watson. There are some points which are as dark as ever. But we have so much that it will be our own fault if we cannot get the rest. We will go straight to Whitehall Terrace and bring the matter to a head.”

When we arrived at the residence of the European Secretary it was for Lady Hilda Trelawney Hope that Sherlock Holmes inquired. We were shown into the morning-room.

“Mr. Holmes!” said the the lady, and her face was pink with her indignation. “This is surely most unfair and ungenerous upon your part. I desired, as I have explained, to keep my visit to you a secret, lest my husband should think that I was intruding into his affairs. And yet you compromise me by coming here and so showing that there are business relations between us.”

“Unfortunately, madam, I had no possible alternative. I have been commissioned to recover this immensely important paper. I must therefore ask you, madam, to be kind enough to place it in my hands.”

The lady sprang to her feet, with the colour all dashed in an instant from her beautiful face. Her eyes glazed — she tottered — I thought that she would faint. Then with a grand effort she rallied from the shock, and a supreme astonishment and indignation chased every other expression from her features.

“You — you insult me, Mr. Holmes.”

“Come, come, madam, it is useless. Give up the letter.”

She darted to the bell.

“The butler shall show you out.”

“Do not ring, Lady Hilda. If you do, then all my earnest efforts to avoid a scandal will be frustrated. Give up the letter and all will be set right. If you will work with me I can arrange everything. If you work against me I must expose you.”

She stood grandly defiant, a queenly figure, her eyes fixed upon his as if she would read his very soul. Her hand was on the bell, but she had forborne to ring it.

“You are trying to frighten me. It is not a very manly thing, Mr. Holmes, to come here and browbeat a woman. You say that you know something. What is it that you know?”

“Pray sit down, madam. You will hurt yourself there if you fall. I will not speak until you sit down. Thank you.”

“I give you five minutes, Mr. Holmes.”

“One is enough, Lady Hilda. I know of your visit to Eduardo Lucas, of your giving him this document, of your ingenious return to the room last night, and of the manner in which you took the letter from the hiding-place under the carpet.”

She stared at him with an ashen face and gulped twice before she could speak.

“You are mad, Mr. Holmes — you are mad!” she cried, at last.

He drew a small piece of cardboard from his pocket. It was the face of a woman cut out of a portrait.

“I have carried this because I thought it might be useful,” said he. “The policeman has recognized it.”