As I remember them they were usually the forerunners of the whirlpools.
The river was still on the rise, scoring at the last camp another three feet.

With such a dashing current the time we made where we were not compelled to move cautiously was admirable.

On this day fourteen miles were traversed, we ran twenty-three rapids, and, what pleased us most, we saw the granite disappear, and the comfortable-looking red strata were again beside us.

The river widened somewhat, and was now about two hundred and fifty feet.

A cascade was passed on the 7th, which we recognized as one Beaman, who had climbed up to it during the winter, from the mouth of the Kanab, had photographed.