Pedro stopped, seeming somewhat uneasy for the first time.

"What is it?" asked Frank, with apprehension.

"Yah, vot id vos?" asked Hans. "Vos der camp left all alone mit ids lonesome?"

"Not that, señors; but we have been heard, and the ones at the camp are hiding and watching."

"Vell, I like dot. Maype dey haf der trop on us alretty soon."

"That is likely," said Frank.

Pedro called out something in Spanish, but there was no answer, save that one of the horses lifted its head and neighed.

Then Frank tried it in English:

"Ho, the camp! Who is there, and where are you?"

Almost instantly a man's voice replied: