"My friend also told me that his Majesty had decided to take an entirely disinterested opinion with regard to this invention, and asked me if I could recommend any English engineer who had made a study of aërial navigation, and who would be willing to go to Russia, superintend the trials of the war-balloon, and report as to their success or otherwise.

"This happened a few days ago only, and as I had happened to read an article that you will remember you wrote about six months ago in the Nineteenth, or, as it is now called, the Twentieth Century, I thought of your name, and said I would try to find some one. Two days later I got news from the Circle of your invention—never mind how; you will learn that later on—and called at the Embassy to say I had found some one whose judgment could be absolutely relied upon. Now, wasn't that kind of me, to give you such a testimonial as that to his Omnipotence the Tsar of All the Russias?"

Once more Arnold bowed his acknowledgments—this time somewhat ironically, and Natasha interrupted the narrative by saying with a spice of malice in her voice—

"No doubt the Little Father will duly recognise your kindness, Princess, when he gets quite to the bottom of the matter."

"I hope he will," replied the Princess, "but that is a matter of the future—and of considerable doubt as well." Then, turning to Arnold again, she continued—

"You will now, of course, see the immense advantage there appeared to be in getting you to examine these war-balloons. They are evidently the only possible rivals to your own invention in the field, and therefore it is of the utmost importance that you should know their strength or their weakness, as the case may be.

"Well, that is all I have to say, so far. It has been decided that you shall go, if you are willing, with us to Petersburg the day after to-morrow to see the balloon, and make your report. All your expenses will be paid on the most liberal scale, for the Tsar is no niggard in spending either his own or other people's money, and you will have a handsome fee into the bargain for your trouble."

"So far as the work is concerned, of course, I undertake it willingly," said Arnold, as the Princess stopped speaking. "But it hardly seems to me to be right that I should take even the Tsar's money under such circumstances. To tell you the truth, it looks to me rather uncomfortably like false pretences."

Again Natasha's eyes flashed approval across the table, but nevertheless she said—

"You seem to forget, my friend, that we are at war with the Tsar, and all's fair in—in love and war. Besides, if you have any scruples about keeping the fee for your professional services—which, after all, you will render as honestly as though it were the merest matter of business—you can put it into the treasury, and so ease your conscience. Remember, too," she went on more seriously, "how the enormous wealth of this same Tsar has swollen by the confiscation of fortunes whose possessors had committed no other crime than becoming obnoxious to the corrupt bureaucracy."