The commanding officer of Fort Kearney was there. A hundred of his soldiers had placed themselves in a position to defend the station, should the Sioux attack it.

“Sir,” said Mr. Fogg to the captain, “three passengers have disappeared.”

“Dead?” asked the captain.

“Dead or prisoners; that is the uncertainty which must be solved. Do you propose to pursue the Sioux?”

“That’s a serious thing to do, sir,” returned the captain. “These Indians may retreat beyond the Arkansas, and I cannot leave the fort unprotected.”

“The lives of three men are in question, sir,” said Phileas Fogg.

“Doubtless; but can I risk the lives of fifty men to save three?”