"What do you mean by that?"

"I mean that he had been communicated with by the Washington office, during the day, and given instructions."

"To scare you?"

"No; to keep me up to the mark in caution."

"I don't think you needed that."

"Well," Ned went on, "this is a queer case. At first I could not make up my mind why the Secret Service people insisted on my making this trip to Peking on a motorcycle, guarded by soldiers like a passenger in time of war. Now I think I know."

"Then you have the advantage of me," said the officer. "I've been thinking that over quite a lot, and the answer is still to find."

"Unless I am mistaken," Ned replied, "I am expected to do my work on the way to Peking."

"Come again!" smiled the Captain.

"In other words," replied Ned, "I'm set up on a motorcycle as a mark for the diplomats of Europe to shoot at."