“That is all. Good-by, little Nora. Don’t forget Burton.”

We heard the girl’s sobs after the door was shut.

“I’m her only friend,” said my companion, as he walked away. “No wonder she is moved at letting me go. I think, with her, that it is doubtful if she lasts until we get back. Still, her disease is a lingering one—I hope I shall see her live to witness the sad triumph of our industry.”

“You speak as if the triumph were already secured.”

“If he’s on the face of the earth, we’ll find Doctor George Thorley. It is no longer possible that we should be on the wrong track. You know, Richard, that I have not confided all my secrets to you. There will be no one more astonished than yourself when I summon my witnesses and sum up my conclusions. Oh, that the hour were come! But I forget my motto—‘learn to labor and to wait.’”

CHAPTER IV.
EMBARKED FOR CALIFORNIA.

We were on our way to California by the next steamer. By the advice of Mr. Burton I purchased my ticket under an assumed name, for he did not wish to excite the curiosity of the Argylls, who might happen to see the passage-list, and who would be sure to suspect something from the contiguity of our names. To his friends, who chanced to know of his sudden intentions, Mr. Burton represented that the health of his daughter demanded a change of climate, and business matters had led him to prefer California.

It was fortunate, since the expenses of such a trip had become so unexpected a necessity, that I had lived in the plain, retiring manner which I had done in Washington. I had wasted no money on white kids, bouquets, nor champagne-suppers; I had paid my board and washing-bills, and a very moderate bill to my tailor; the rest of my salary had been placed in a New York bank to my account. My scorched soul and withered tastes had demanded no luxurious gratification—not even the purchase of new books; so that now, when this sudden demand arose, I had a fund sufficient for the purpose. Mr. Burton bore his own expenses, which, indeed, I could not help, for I had not the means of urging a different course upon him.

We had a very definite object, but no definite plans; these were to be formed according to the circumstances we had to encounter after our arrival in El Dorado. Of course our man was living under an assumed name, and had traveled under an assumed one; we might have every difficulty in getting upon his track. At the time the detective had discovered the return of the five-hundred dollar bill from San Francisco, he had, with great perseverance, gained access to, and “made a note of” the passengers’ lists of all the steamers which sailed at or about the time of the murder, for California. These he had preserved. Out of the names, he had chosen those which his curious sagacity suggested were the most likely to prove fictitious, and, if no quicker method presented itself, he intended to trace out one and all of those passengers, until he came upon the man. In all this I was his assistant, willing to carry out his directions, but trusting the whole affair to his more experienced hand.

During the long, monotonous days of our voyage, I seemed to have