When first the question of radium arose in this chronicle it will be remembered that Barraclough, under considerable pressure, yielded the secret of the map reference to his fiancÉe, and by this very act made a present of it, through the pages of narrative, to whosoever might chance to read.

It would seem a perfectly reasonable supposition that there must be many avaricious persons to whom the possession of untold riches would prove more attractive than a mere interest in the doings of another man. Let it be said at once that although Barraclough certainly confided the correct map reference to Isabel, that reference, for the purposes of caution and public safety, underwent several important variations before passing into my hands. The reason of this precaution will be readily appreciated by the thoughtful however great may be the disappointment it provides to the adventurous. A memory of average length will recall the high percentage of disaster, of wrecked hopes and of ruin pursuant upon the gold rush to Klondyke at the close of the last century. Barely one man in a hundred made a living—barely one in a thousand saw the yellow specks in his shovel that shone so bright among the brown. Those who had set forth, buoyed up with boundless belief, dragged back to where they had started from broken in purse and spirit, barren of hope and faith.

What then would be the result if the illimitable source of wealth upon which by chance and a whisper Barraclough had stumbled should be revealed to the world? A panic—a mad headlong exodus of men and women too. Unequipped and unqualified they would pour from city and country-side, leaving desk and furrow, in a wild race to be first upon the scene—to stake a claim—any claim—to dig—to grovel—to tear up the kindly earth with fingers like the claws of beasts. Wealth, upon which our civilisation has been built, is the surest destroyer of civilisation. What it has given it takes away. Dangle a promise of gold before the young man at the ribbon counter and behold he is become a savage. Whisper it never so gently—and it will sound as the roar of torrents in our ears.

Brewster's Series 19. Map 24. Square F. North 27. West 33. Look it up for yourself. It exists all right but there is no radium there, not any within a thousand miles for aught I know to the contrary. In that location and over a large stretch of surrounding country-side the earth's outer crust is mainly argillaceous with here and there an outcrop of sandstone. There is not the smallest indication of pitch-blende anywhere in the neighbourhood, and radium, as even those little versed in chemistry or geology are aware, is only to be found in that particular ore.

It would be well, therefore, to think twice before embarking upon a fruitless treasure hunt after reading what has here been set down. It was the knowledge of the inevitable consequences that would result from incautious confidence that sealed Barraclough's lips and made his movements on arriving at Southampton so secretive. It is known there was a fog over the Solent on the afternoon in question and that a small brown-sailed boat with a man sitting in the stern put out from the shore and was presently swallowed up in the white tasselled wreaths of mist. That same boat was discovered minus its passenger in the early hours of the following day. A coastal collier, racketing into port in the quiet of evening, brought the tale of a seaplane that narrowly missed crashing into her deck house. Long after it was out of sight the crew heard its engines droning overhead. Then for a while there was silence during which a curious pinkish glow appeared to the starboard and died away. This glow was repeated three times and at the third repetition the waterplane engine was again audible, increasing in volume every moment. Presently it cut out and nothing was heard for several minutes. When it started again it must have been quite near at hand for the sound of water cut by the floats was detectable. The engines howled and whined until the roar diminished to a sound no greater than the buzzing of a bee fading into nothing over the wake of the little steamer.

Whether or no these recorded circumstances have any bearing on the mystery of Anthony Barraclough's disappearance it would be impossible to say but the Harbour Authorities who were questioned as to whether they had knowledge of the movements of this particular waterplane replied with a regretful negative. They neither knew where it came from nor whither it went and there is a strong rumour that one or two quite important persons got into severe trouble for their want of information.

The one thing that is positively known is that Barraclough arrived in and disappeared from Southampton in a single day, but whether he went North, South, East or West is a matter for speculation.