It occurred to him that he had burst a blood vessel.
Brilliant lights seemed to be burning in front, behind and all around him, with the intensity of electric search lights.

A village appeared on the bank and he concluded to stop.

Pulling in shore, he was bewildered to find only the mud bank.

This discovery startled him into a realization that something was wrong with his brain.

The mind was wavering between the hallucinations of a fever, and lucidity.
Vagaries occasioned by a high temperature, would suddenly vanish as the struggling mind briefly asserted itself.