Those who have read the first and second volumes of this series will understand without being told here that it was a very fine clubroom upon which the frosty blue eyes of the Secret Service man looked.

The walls were adorned with all manner of hunting and fishing paraphernalia, together with many trophies of the chase. Foils, gloves, ball bats, paddles and many other athletic aids were scattered about the large room.

This clubroom, that of the Black Bear Patrol, as has been said, was the handsomest in New York, the members of the Patrol being sons of very wealthy men. The father of Frank Shaw was editor and owner of one of the important daily newspapers of the metropolis. Jack Bosworth's father was a prominent corporation lawyer, while Harry Stevens, a lad with a historical hobby, was a prominent automobile manufacturer.

Ned Nestor, the boy just now trying to entertain the very formal Captain Moore, was a member of the Wolf Patrol, also of New York, as was also Jimmie McGraw, who had been a Bowery newsboy before joining fortunes with Ned.

As is well known to most of our readers, Ned had, at one time and another, undertaken and successfully accomplished delicate and hazardous enterprises for the United States Government. Accompanied by Frank, Jack, Jimmie, Harry, and other members of the Boy Scout Patrols of the United States, he had visited Mexico, the Canal Zone, the Philippines, the Great Northwest, had navigated the Columbia river in a motor boat, and had covered the continent of South America in an aeroplane.

He was now about to enter upon, perhaps, the most important mission ever assigned to him by the Secret Service department. The story of the quest upon which he was about to enter will best be told in the conversation which now took place in the clubroom of the Black Bear Patrol on this evening of the 11th of September.

Presently Captain Moore transferred his gaze from the apartment to the boys gathered about the table and grouped about the place. As a matter of course all conversation in the room had ceased on the arrival of the Captain. While the boys who were not fortunate enough to be planning on the trip in the submarine were too courteous to openly stare at their guest of the moment, it may well be believed that his every look and word was closely noted.

Concluding his rather rude observations, Captain Moore dropped his glass, shrugged his shoulders, which were heavily padded, and gave utterance to his feelings in the one word of comments which he had twice used before:

"Fawncy!"

Ned said not a word, but waited for the visitor to lead out in the talk. Captain Moore was in no haste to begin, but he finally broke the silence by asking: