At half-past twelve the travellers caught sight for an instant of Fort Halleck, which commands that section; and in a few more hours the Rocky Mountains were crossed.  There was reason to hope, then, that no accident would mark the journey through this difficult country.  The snow had ceased falling, and the air became crisp and cold.  Large birds, frightened by the locomotive, rose and flew off in the distance. No wild beast appeared on the plain.  It was a desert in its vast nakedness. After a comfortable breakfast, served in the car, Mr. Fogg and his partners had just resumed whist, when a violent whistling was heard, and the train stopped.  Passepartout put his head out of the door, but saw nothing to cause the delay; no station was in view. Aouda and Fix feared that Mr. Fogg might take it into his head to get out; but that gentleman contented himself with saying to his servant, "See what is the matter." Passepartout rushed out of the car.  

Thirty or forty passengers had already descended, amongst them Colonel Stamp Proctor. The train had stopped before a red signal which blocked the way.  The engineer and conductor were talking excitedly with a signal-man, whom the station-master at Medicine Bow, the next stopping place, had sent on before.  The passengers drew around and took part in the discussion, in which Colonel Proctor, with his insolent manner, was conspicuous. Passepartout, joining the group, heard the signal-man say, "No! you can't pass.  The bridge at Medicine Bow is shaky, and would not bear the weight of the train." This was a suspension-bridge thrown over some rapids, about a mile