"Thanks—Greek history never was my strong point at school!" said Dave with a good-humoured laugh. Then, resuming: "As to the Russian navy, matters would be just as bad. Half her ships at least must be in the Baltic to protect her home ports——"

Before he could proceed further, an interruption occurred. An orderly mounted the steps to the quarter-deck and with the usual stiff salute handed Rexdale a letter, marked "Important and Immediate."

The commander broke open the envelope. He had no sooner read the few lines it contained than he sprang to his feet.

"Madam," he said abruptly but courteously, "and gentlemen, I am sorry to bring our pleasant party to an end, but my orders leave me no choice. Mr. Staples, I must see you and the rest of the officers at once in my cabin. Orderly, attend the ladies through the Yard. Good-night, all!"

Hurriedly the girls ran below for their wraps, wondering what the mysterious orders could be that compelled them to retire so early and brought that new ring to the commander's tones. They bade good-night to the young officers, who would fain have escorted them to their home, but Rexdale was obliged to refuse his permission.

"Good-night! good-night! We shall see you again soon!" called the girlish voices from the wharf, while their late companions swung their hats gallantly on the deck of the Osprey.

"Gentlemen," said Rexdale in grave, earnest tones, when they were all gathered once more in the cabin, "I have important news for you. We are ordered to coal and take on stores and ammunition for sea without delay, sailing one week from to-day, if possible. You will see that this is done promptly, and that every man reports for duty to-morrow, all shore leave being withdrawn."

Not a man there but longed to ask, "What is our port of destination?" but discipline prevailed. Their lips remained closed. They were no longer a party of young fellows chatting and laughing gaily as they performed their pleasant social duties and joked with their merry guests; they were officers in the United States Navy, ready for the duty at hand; willing to go to the ends of the earth, to encounter danger in its most appalling forms, to give their lives, if need be, for their country. Silence settled for a moment over the group.

"If I could I would tell you, without reserve, where we are bound; but I do not know myself," added Rexdale. "There are new complications in the far East—that is all I know. We sail under sealed orders, to be opened at sea, twenty-four hours out."