-) Stalking Expeditions in the Xvikn. 



which occur in a long, deep depression of the desert 

 surface. Over them, near them everywhere, indeed, that 

 the eye can reach the infinite desert shimmers in the 

 throbbing light. 



'I he whole vast region lies in a dazzling <>-low, 



-> O O 



intensified by the hot waves of air that ascend from it. 

 Over and over again experience and common-sense have 



MY CARRIERS INDULGE IN A WASH 



to be called in to correct the delusions of the eye, which 

 constantly deceives itself with regard to the perspective. 

 For instance, while the eye supposes itself capable of 

 seeing herds of game down there, as a matter of fact, 

 we can scarcely make out with the naked eye the big 

 surfaces of our tents below us in the camp we can only 

 see them with the glasses. It is important that the tents 

 should stand out well from their surroundings, so they 



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