With fresh, strong animals, and without that terrible choking thirst, that night ride over the moonlight plain would have been a rare pleasure. Under the circumstances it was like a frightful dream. Neither of the riders cared to talk; the effort was too painful; but both thought of the last ride they had taken together in the cab of a locomotive on a Missouri railroad, and the man looked tenderly at the boy, as he recalled the incidents of that night. For an hour they rode in silence, their panting steeds maintaining a shambling gait through the sand, that was neither a trot nor a lope, but a mixture of the two. Then they dropped into a walk, and, for another hour, were only roused to greater speed by infinite exertions on the part of their riders. At last Señor stumbled heavily, recovered himself, and then fell.