Note 203
The Second Kalandar’s Tale.

Arab. "Sadd"=wall, dyke, etc. the "bund" or "band" of Anglo-India. Hence the "Sadd" on the Nile, the banks of grass and floating islands which "wall" the stream. There are few sights more appalling than a sandstorm in the desert, the "Zauba'ah" as the Arabs call it. Devils, or pillars of sand, vertical and inclined, measuring a thousand feet high, rush over the plain lashing the sand at their base like a sea surging under a furious whirlwind; shearing the grass clean away from the roots, tearing up trees, which are whirled like leaves and sticks in air and sweeping away tents and houses as if they were bits of paper. At last the columns join at the top and form, perhaps three thousand feet above the earth, a gigantic cloud of yellow sand which obliterates not only the horizon but even the mid-day sun. These sand-spouts are the terror of travellers. In Sind and the Punjab we have the dust-storm which for darkness, I have said, beats the blackest London fog.