
 
        
         
		east  and  raised  his  chin,  as  an  Arab  does when  he  
 wishes  to  indicate  anything—there  existed  a valley  
 between some mountains where large  stones  ‘ as big  
 as  a  fowl’s  egg’  were  to  he  found  which  glowed  
 with a phosphorescent light in the dark. 
 The  night was the  only time when  these  stones  
 could  be  found, for  during  the  daytime  they could  
 not  be  distinguished  from  the  pebbles  which  surrounded  
 them. 
 Unfortunately  after  sunset  the  whole  valley  
 swarmed  with  venomous  snakes  which,  since  they  
 could  spring as high  from  the  ground  as the  hump  
 of  a  camel, made  it  a  matter  of  certain  death  for  
 anyone who ventured within their domain. 
 During  the  daytime  the  snakes  in  the  valley  
 retired to holes in the rocks  to  sleep,  and  there  was  
 no  danger  whatever  in  entering  the  gorge—but  
 during the daytime the  stones could not be found. 
 Any  Tawarek, therefore, who  made  it  his  business  
 to  collect  them  was  compelled  to  enter  the  
 valley  by night.  In  order  to  protect  himself  from  
 the snakes he adopted the following method  of  procedure. 
   He  sewed  up his camel in sheepskins with  
 the  woolly  side  out,  and  covered  the  lower  part  of  
 his own body as far as his waist in the same manner.  
 Before him,  on his camel, he carried  a  small  bag  of  
 powdered charcoal, and he held in his hand a hollow  
 reed.  Whenever  he  caught  sight  of  a  luminous  
 stone  he  placed  the  end  of  the  reed  over  it,  and,  
 without dismounting, poured a handful  of  the charcoal  
 down  the  tube,  so  that  when morning  broke,  
 and the serpents  had  retired  to  sleep  in  their  dens 
 among  the rocks, he  would  be  able  to  return,  and,  
 by means  of  these  little  heaps of  charcoal,  identify  
 the stones which he had observed during the night. 
 What  kind  of  stones  these  were,  what  the  
 Tawareks did with  them when  they  had  got  them,  
 and  where  that  valley was, Aissa  could  not exactly  
 say, but he was ready to swear to the whole story as  
 being true. 
 Among these serpents  Aissa  declared  that  there  
 was to be found a horrible reptile, which he called  a  
 Tharben.  He described it as being eighty feet long,  
 six feet wide,  and declared that  it  had  long hair  on  
 the back of its head like a woman. 
 I  am  devoutly  thankful  to  say  that  we  never  
 met  one  of  these  horrible  reptiles.  Aissa  told me,  
 in strict confidence,  that he did  not  quite  believe  in  
 the existence of this particular creature;  but,  for all  
 that, I fancy that when, later on, we camped at night  
 in the open desert,  and he borrowed my gun to keep  
 watch,  as  he  said,  against  robbers,  it  was  not  so  
 much the  attacks  of  marauding  Arabs or Tawareks  
 that he feared as the  arrival on  the  scene  of  one  of  
 these gruesome  Tharbens. 
 The  Tawarek  country, being  practically  a  terra  
 incognita to the Algerian Arabs, is regarded by them  
 as a sort of enchanted land, peopled with  spirits  and  
 all kinds of horrible creatures. 
 One of the most curious of these is the Taner’out.  
 It  is  described  as  being  a  huge  black  creature,  
 globular in shape, and  as  large as a camel.  It  lives  
 in the caves  of  the  Saharan mountains in a state of  
 perpetual slumber.  But if  any man  is  unfortunate