On the third morning I found the soil dry enough to walk upon with ease. The odour of the fish was maddening; but I was too much concerned with graver things to mind so slight an evil, and set out boldly for an unknown goal. All day I forged steadily westward, guided by a far-away hummock which rose higher than any other elevation on the rolling desert. That night I encamped, and on the following day still travelled toward the hummock, though that object seemed scarcely nearer than when I had first espied it. By the fourth evening I attained the base of the mound, which turned out to be much higher than it had appeared from a distance, an intervening valley setting it out in sharper relief from the general surface. Too weary to ascend, I slept in the shadow of the hill.