“Seems like it’s the old story over again,” Hiram remarked, “and there’s no end to the queer things we run up against. I’m getting so nowadays I expect some surprise to break in on me any minute, day or night. If it isn’t one thing then it’s another. And when all else fails why we c’n depend on Tubby here to keep the wheels spinning with some of his antics.”

“Antics!” echoed Tubby, indignantly. “I object to you giving my adventure of this afternoon such a name as that. You must think I would purposely tie myself to a speeding aëroplane, and then have to run after it just for the fun of the thing. Antics nothing. Misfortunes, you’d better call my troubles after this.”

“Oh, never mind, Tubby! After all, you didn’t get hurt,” said Andy. “In this case it looks like the thief had had his troubles for nothing.”

“I’ve got a theory,” said Rob, “but of course there’s no way of proving it. It’s connected with those two fellows who tried to play a smart game on Hiram here at Los Angeles, and got left for their pains.”

“Hello! I haven’t heard anything about that up to now,” exclaimed Tubby. “Who and what were they, Rob? Ten to one you engineered a scheme to block them, because it would be just like Rob Blake to do that.”

So Andy, having a glib tongue, took it upon himself to relate the adventure of the through train, and how the two clever rogues had tried to get them to enter a carriage as prisoners, meaning, of course, to rob Hiram as soon as the chance came.

Tubby laughed when he heard how their plan was brought to naught. His merriment grew even more boisterous after he learned that Rob had taken Hiram’s papers to secrete them on his person, while the other hid some old letters in an inside pocket, which were deftly “lifted” during the short time the boys happened to be in close touch with the pair of rogues.

“Just to think of the bitter disappointment they met with,” said Tubby between his gasps. “I’m sure they’ll remember you fellows with anything but pleasure. Every time they glimpse a boy in khaki they’ll be apt to utter some hard words.”

“Well,” continued Rob, “it was on what they must feel that I based my theory. You see, they must have been coming to one of the expositions, probably the big Panama-Pacific show, to ply their trade. That would take them here to San Francisco. By some chance or other they may have seen us, and found out where we are stopping; and this raid was carried out more with a desire to have revenge on us than anything else. If some one hadn’t alarmed the fellows they might have amused themselves destroying everything in our bags and trunk.”

“A mean revenge, but I wouldn’t put it past a thief who was boiling mad because three Boy Scouts had managed to get the better of him,” Andy declared, with considerable emphasis, which looked as though he rather favored the theory advanced by the scout leader.