A sign brought a serving man up the stairs.

“Call the carriage of the Princess von Steinheimer,” said his master; then, as the lady descended the stair, Lord Donal turned, with no very thankful feeling in his heart, to hear what his host had to say.

“Lord Donal, the American Ambassador says that woman is not the Princess von Steinheimer, but is someone of no importance whom he has met several times in London. He cannot remember her name. Now, who is she, and how did you come to meet her?”

“My Lord Duke, it never occurred to me to question the identity of guests I met under your hospitable roof. I knew the Princess five years ago in Washington, before she was married. I have not seen her in the interval, but until you showed me the telegraphic message there was no question in my mind regarding her.”

“But the American Ambassador is positive.”

“Then he has more confidence in his eyesight than I have. If such a question, like international difficulties, is to be settled by the Embassies, let us refer it to Austria, who held a long conversation with the lady in my presence. Your Excellency,” he continued to the Austrian Ambassador, who was hovering near, waiting to speak to his host, “The Duke of Chiselhurst has some doubt that the lady who has just departed is the Princess von Steinheimer. You spoke with her, and can therefore decide with authority, for his Grace seems disinclined to accept my testimony.”

“Not the Princess? Nonsense. I know her very well indeed, and a most charming lady she is. I hope to be her guest again before many months are past.”

“There, my Lord Duke, you see everything is as it should be. If you will give me that stupid telegram, I will make some quiet inquiries about it. Meanwhile, the less said the better. I will see the American Ambassador and convince him of his error. And now I must make what excuses I can to the Princess for my desertion of her.”

Placing the telegram in his pocket, he hurried down the stair and out to the street. There had been some delay about the coming of the carriage, and he saw the lady he sought, at that moment entering it.

“Home at once as fast as you can,” he heard her say to the coachman. She had evidently no intention of waiting for him. He sprang forward, thrust his arm through the carriage window, and grasped her hand.