The signature, to which I turned at once before reading the body of the message, was Julius LeVallon; and as my eye noted the firm and very individual writing, once of familiar and potent significance in my life, I was conscious that emotions of twenty years ago woke vigorously into being, releasing sensations and memories I had thought buried beyond all effective resurrection. I knew myself swept back to those hopes and fears that, all these years before, had been--me. The letter was brief; it ran as follows: FRIEND OF A MILLION YEARS,--Should you remember your promise, given to me at Edinburgh twenty years ago, I write to tell you that I am ready. Yours, especially in separation, JULIUS LEVALLON. And then followed two lines of instructions how to reach him in the isolated little valley of the Jura Mountains, on the frontier between France and Switzerland, whence he wrote. The wording startled me; but this surprise, not unmingled with amusement, gave place immediately to emotions of a deeper and much more complex order, as I drew an armchair to the window and resigned myself, half pleasurably, half uneasily, to the flood of memories that rose from the depths and besieged me with their atmosphere of half-forgotten boyhood and of early youth. Pleasurably, because my curiosity was aroused abruptly to a point my dull tutorial existence now rarely, if ever, knew; uneasily, because these early associations grouped themselves about the somewhat unearthly figure of a man with whom once I had been closely intimate, but who had since disappeared behind a veil of mystery to follow pursuits where danger to body, mind and soul--it seemed to me--must be his constant attendant. For Julius LeVallon, or Julius, as he was known to me in our school and university days, had been once a name to conjure with; a personality who evoked for me a world more vast and splendid, horizons wider, vistas of possibilities more dazzling, than any I have since known--which have contracted, in fact, with my study of an exact science to a dwindled universe of pettier scale and measurement;--and wherein, formerly, with all the terror and delight of vividly imagined adventure, we moved side by side among strange experiences and fascinating speculations.