“That’s so,” admitted the young inventor.  “That will be the best plan.  Once I find which way they have gone I can easily overtake them in the airship.  And when I find ’em—­” Tom paused significantly.

“Me help you fix ’em!” cried Koku, clenching his big fist.

“They will probably figure it out that you will take after them,” said Mr. Nestor, “but they may not count on you doing it in the Flyer, and so they may not try to hide.  It isn’t going to be an easy matter to pick a small party out of the jungle though, Tom.”

“Well, I’ve done more difficult things in my airships,” spoke our hero.  “I’ll fly low, and use the glass.  I guess we can pick out their crowd of porters, though they won’t have many.  Oh, my camera!  I hope they won’t damage it.”

“They won’t,” was Ned’s opinion.  “It’s too valuable.  They want it to take pictures with, themselves.”

“Maybe.  I hope they don’t open it, and see how it’s made.  And I’m glad I thought to hide the picture films I’ve taken so far.  They didn’t get those away from us, only some of the blank. ones,” and Tom looked again in a secret closet. where he kept the battle-films, and the others, in the dark, to prevent them from being light-struck, by any possible chance.

“Well, if we’re going to make some inquiries, let’s do it,” suggested Mr. Nestor.  “I think I see some of the Africans over there.  They have made a temporary camp, it seems, to attend to some of their wounded.”

“Do you think we can make them understand what we want?” asked Ned.  “I don’t believe they speak English.”

“Oh these blacks have been trading with white men,” said Tom, “for they have ‘trader’s’ guns, built to look at, and not to shoot very well.  I fancy we can make ourselves understood.  If not, we can use signs.”

Leaving Koku and Mr. Damon to guard the airship, Tom, Ned and Mr. Nestor went to the African camp.  There was a large party of men there, and they seemed friendly enough.  Probably winning the battle the day before had put them in good humor, even though many of them were hurt.

To Tom’s delight he found one native who could speak a little English, and of him they made inquiries as to what direction the Englishmen had taken.  The black talked for a while among his fellows, and then reported to our friends that, late in the night, one of the porters, hired by Montgomery and Kenneth, had come to camp to bid a brother good-bye.  This porter had said that his masters were in a hurry to get away, and had started west.

“That’s it!” cried Mr. Nestor.  “They’re going to get somewhere so they can make their way to the coast.  They want to get out of Africa as fast as they can.”

“And I’m going to get after ’em as fast as I can!” cried Tom grimly.  “Come on!”

They hurried back to the airship, finding Koku and Mr. Damon peacefully engaged in talk, no one having disturbed them.