While the barrister was giving his evidence Lord Prelice was called to Cudworth's side, and introduced by Dr. Horace. He learned that the Counsel wished him to appear as a witness and substantiate Shepworth's story, which the young man was perfectly willing to do. It thus happened that when Shepworth retired Cudworth examined Prelice, and heard from him how Shepworth had been found unconscious, and how many people, including Captain Jadby, had seen him in this helpless state. This evidence induced the recall of Jadby, and he reluctantly swore that the barrister was indeed unable to strike the murderous blow which had slain the old sailor. Both Shepworth and Prelice had given evidence as to the finding of the knife under the table by Inspector Bruge, and that officer himself next appeared to say how he had picked it up. Mrs. Blexey, Madame Marie Eppingrave, and two of the Grange servants were then called to depose that the paper-cutter with the jade handle, found in the flat by Bruge; and produced in Court, was the same that had lain on Sir Oliver's writing-table in the library, wherein the crime had been committed. Thus the jury, and indeed everyone else, believed that Agstone had murdered his master, and then had brought the knife up to Alexander Mansions, presumably to kill Shepworth; but, of course, the question as to who had killed Agstone was not touched upon. The final witness was Dr. Horace, and he dealt entirely with the questions of the perfumed smoke alluded to by the prisoner and by Shepworth. Producing a grotesque brown root and several stems covered with purple leaves, more or less withered, the doctor deposed that it was a certain plant growing in Easter Island, and nowhere else, so far as he knew. The natives gave it no name, but termed it "The Sacred Herb," and it was used by their priests to induce trances, in which the spirit was supposed to leave the body, and appear before the gods incarnate--so to speak--in the gigantic statues of the island. Belmain (for the prosecution): "Did you give any portion of this herb to Sir Oliver Lanwin?" Witness (emphatically): "No! I was acquainted with Sir Oliver in the South Seas, but I never met him in England. We did not get on well together, and were better apart." Belmain: "Then how did Sir Oliver become possessed of this herb, which, by your own showing, is to be found only in Easter Island?" Witness: "I cannot say how Sir Oliver got the herb. Of course, he was sailing the South Seas for years, and probably went to Easter Island. If he did, he certainly would have secured a portion of the herb from the native priests, seeing that he took so profound an interest in occult matters." Belmain: "Then you think that Sir Oliver was experimenting with the herb when prisoner entered the library?"