CHAPTER II.
LIFE'S GREAT HEARTS, AND THE HELPFULNESS OF THE HIGHER MANHOOD.
The oases in the Arabian desert lie under the lee of long ridges of rock.

The high cliffs extending from north to south are barriers against the drifting sand.

Standing on the rocky summit the seer Isaiah beheld a sea whose yellow waves stretched to the very horizon.
By day the winds were still, for the pitiless Asiatic sun made the desert a furnace whose air rose upward.

But when night falls the wind rises.

Then the sand begins to drift.