BY THE WAY—FROM CAIRO TO DAKHALA. 55 For six weeks southerly winds blew almost daily. South of 17 degrees, the northerly breeze does not commence to blow before the end of August.

It was warm, extremely warm, under the burning tropical sun. The heat bore down like a load upon head and shoulders and enveloped us like a blast from a roaring furnace. About noontide it was ordinarily 120 degrees Fahr. in my tent. Still, I am sure it was by no means so oppressive as at Korti in March 1885. The Atbara and the Nile helped to temper the fiery glow that radiated from the desert rocks and sands. At best, the heat is a sore trial, but to be borne with more patience than the “devils” and sand storms that bother by night as well as by day. Snow-drifts are mild visitations of Providence compared with a dust storm or whirlwind. These latter would smother you, if you would let them, quicker and less respectably than a shroud of snow. Jack Frost bites mildly, preferring to do his serious work by dulling the nerves; but the Dust Devil is a cruel tormentor from first to last. You may bury your head in folds of cloth and mosquito netting, and sweat and stifle in the attempt, but he snuffs you and powders you all the same. He puffs his finest clouds in your face, and round and round you till you find bedding and clothing are no more protection against him than they are against the Rontgen ray. One particular night he came in great strength to Dakhala, heaped waves of sand over us, dug great hollows around our quarters, and completed his diabolical games by completely overturning two of my colleagues’ tents. I saw