Now you will see me run through the whole gamut of metallic nature." First of all men after the discoverer, Robert saw the gold mass, when the electrodes were again applied to it, change swiftly and successively to barium, to tin, to silver, to copper, to iron.

He saw the long white electric sparks change to crimson with the strontium, to purple with the potassium, to yellow with the manganese.

Then, finally, after a hundred transformations, it disintegrated before his eyes, and lay as a little mound of fluffy grey dust upon the glass table.
"And this is protyle," said Haw, passing his fingers through it.

"The chemist of the future may resolve it into further constituents, but to me it is the Ultima Thule." "And now, Robert," he continued, after a pause, "I have shown you enough to enable you to understand something of my system.

This is the great secret.