"'How much?' I inquired, responding to his playfulness.
"'A bargain,' he cried gaily. 'Five millions dollars. No! Shall I upon-a- needy-friend hard-press? Never. One million. One little million dollars.'
"'I haven't that amount with me,' I began.
"'Of no account,' he declared airily. 'Soon we shall haf many more times as that. Gif me your C.O. D.'
"'My I. O. U.?' I inquired.
"'It makes no matter. See. I will gif it to you gratis.'
"He handed me the metal contrivance. It was closed.
"'Inside iss a little, such a very little. Not yet iss it arranged the motive-power to give-forth. One more change-to-be-made that shall require. But the other phenomena are all in this little half-grain comprised. Later I shall tell you more. Take it. It iss without price.' He laid his hand on my shoulder. 'Like the love of friends,' he said gently."
Feeling in his upper waistcoat pocket, Darrow brought out a phial, so tiny that it rolled in the palm of his hand. He contemplated it, lost in thought.
"Radium?" queried Barnett, with the keen interest of the scientist.