'There is a full head on now. I fired up the minute you left the-wagon.'

'Good!' exclaimed Baldy, who in his excitement did not observe that the steam man was seething, and apparently ready to explode with the tremendous power pent up in its vitals.

CHAPTER IX. THE STEAM MAN AS A HUNTER.

AT this juncture the trapper whispered that the Indians were again stealing around them. Johnny's first proceeding was to pull the whistle wide open, awaking the stillness of the night by a hideous, prolonged screech.

Then, letting on the steam, the man made a bound forward, and the next moment was careering over the prairie like a demon of darkness, its horrid whistle giving forth almost one continual yell, such as no American Indian has ever been able to imitate.

When they had gone a few hundred yards, Johnny again slackened the speed, for there was great risk in going at this tremendous rate, where all was entire blank darkness, and there was no telling into what danger they might run. At the speed at which they were going they would have bounded into a river before they could have checked themselves.

'Yer furgot one thing,' said Baldy, when they had considerably moderated their gait, and were using great caution.

'What is that?'

'Yer oughter had a lamp in front, so we could travel at night, jist as well as day.'