“Professor Dean,” he said presently, “I’ll make you a proposition. Under these new conditions you need someone to guide your efforts and to properly market the product of your brain. I invite you to come with me to Pennsylvania, and pursue your researches and your work. It will be a mutual enterprise. As for the terms, there will be no difference between us as to that; they shall be of your own making.”

“You mean this?” exclaimed the Professor in astonishment.

“Positively,” answered General Mainwarren firmly; “I make you this as an offer. You are to pursue your researches and your work at your leisure and I am to supply such funds, or other promotive assistance, as may be needed. The benefits accruing we’ll share jointly, upon such terms as you yourself shall dictate. It’s a simple business proposition. Do you accept?”

“The conditions are certainly most liberal!” exclaimed the Professor. “I——”

“Why, then, do you hesitate?”

“May I ask when this offer is to go into effect?”

“Immediately.”

“Ah,” exclaimed the Professor deprecatingly, “I don’t want to leave my friend Kearns so suddenly. I must ask for some time in which to reach a decision.”

“By all means,” answered General Mainwarren, “but I ask it as a condition that you will not enter into any negotiation or discussion on this subject with outsiders until you have given me an answer. In a word, you are to treat this proposition as entirely confidential between us. Have I your word for this?”

The words had scarcely left General Mainwarren’s lips and before the Professor could make reply, there came from the grounds outside the palace the sharp blast of a bugle, hoarse shouts of command and the sounds of moving men. In an instant the scene in the ball-room changed from one of gayety and frivolity to earnestness, joined to some confusion. Military officers quitted their partners and hurried forth, while the beautifully gowned women looked into one another’s faces with questioning glances. The diplomats gathered in little groups, exchanging whispers. A current of unrest, of uneasiness, had suddenly swept over the brilliant scene—a general presentiment that something momentous had happened.