Not a tree or shrub or flowering plant or blade of grass relieved the arid wastes of the Death Valley.

It was a ghostly, forbidding sight.

Even at that distance with a glass Frank was enabled to see the forms of the victims of the gases strewn along the sandy trail of death.

For a time the travelers gazed upon the scene.

Then Frank aroused himself.

“This will never do!” he cried. “We are losing time here.”

“Dat am a fac’, Marse Frank,” cried Pomp.

“Begorra, yez won’t go ahead will yez?” asked Barney.

“I don’t think we will follow the sandy trail of death,” replied Frank. “But I would like to know where Mason’s den is.”

At this moment a sudden startling sound smote upon the ears of all.