He resolved to follow it up-stream far enough to settle the point.
If it's nothing of consequence you can follow on up-stream or camp as you please.
I cast off the up-stream end of one of them, and the current swung it out in the river.
Then a boat running upon it up-stream, is lost to a certainty.
In a moment, then, he was staked; and with a “whisper” I parted from him, ...