None of them had ever seen the like of it. A spell fell upon the assemblage. For five minutes no one spoke, while Mr. Boon continued to chase the flickering sunbeam with the wonderful card. Suddenly the silence was broken by a voice which had a touch of awe in it:

“It must be the metal!”

The speaker was an English financier, First Lord of the Treasury, Hon. James Hampton-Jones, K.C.B. Immediately everybody echoed his remark, and the strain being thus relieved, the spell dropped from them and several laughed loudly over their momentary aberration.

President Boon recollected himself, and, coloring slightly, placed the card flat on the table, in order more clearly to see the name. In plain red letters it stood forth with such surprising distinctness that Mr. Boon wondered why he had so long overlooked it.

“DR. MAX SYX.”

“Tell the gentleman to come in,” said the president, and thereupon the attendant threw open the door.

The owner of the mysterious card fixed every eye as he entered. He was several inches more than six feet in height. His complexion was very dark, his eyes were intensely black, bright, and deep-set, his eyebrows were bushy and up-curled at the ends, his sable hair was close-trimmed, and his ears were narrow, pointed at the top, and prominent. He wore black mustaches, covering only half the width of his lip and drawn into projecting needles on each side, while a spiked black beard adorned the middle of his chin.

He smiled as he stepped confidently forward, with a courtly bow, but it was a very disconcerting smile, because it more than half resembled a sneer. This uncommon person did not wait to be addressed.

“I have come to solve your problem,” he said, facing President Boon, who had swung round on his pivoted chair.

“The metal!” exclaimed everybody in a breath, and with a unanimity and excitement which would have astonished them if they had been spectators instead of actors of the scene. The tall stranger bowed and smiled again: