The day seemed to be hotter and hotter: the sun drew close, and scorched us without intervening air. The clean, sandy soil was so baked that my bare feet could not endure it, and I had to walk in sandals, to the amusement of the Juheina, whose thick soles were proof even against slow fire. As the afternoon passed on the light became dim, but the heat steadily increased with an oppression and sultriness which took me by surprise. I kept turning my head to see if some mass was not just behind me, shutting off the air.

There had been long rolls of thunder all morning in the hills, and the two peaks, Serd and Jasim, were wrapped in folds of dark blue and yellow vapour, which looked motionless and substantial. At last I saw that part of the yellow cloud off Serd was coming slowly against the wind in our direction, raising scores of dust devils before its feet.