
 
        
         
		are  planted  among  the  dunes  if  left  uncultivated  
 are  totally  destroyed  by  the  sand  in  a  very  short  
 time. 
 How is this  lack of  population  to  be  remedied ?  
 It  has  been  proposed  that  the Government  should  
 take  over  the  deserted  houses  and  gardens,  and  
 should  offer them as free grants  to the  time-expired  
 native troops ;  hut  it  is  doubtful whether  this  offer  
 would  be  readily  accepted.  The  majority  of  the  
 tirailleurs indigènes  are of  Kabyle origin,  and  they,  
 like most mountain  races,  are  too  much  devoted  to  
 their  native  hills  to  be  willing  to  settle  elsewhere.  
 The  Spahis,  or  native  cavalry,  are  nearlÿ  all  recruited  
 from  the  land-owning  stock, who  naturally  
 wish  to  end  their  days in their hereditary homes in  
 the  midst  of  their  tribe.  The  sedentary Arab, too,  
 has  an  aversion  to  the  Sahara,  and  a  saying  is  
 current among them that  4 no one lives in the Sahara  
 if he can  live elsewhere.’ 
 A more practical suggestion is that these deserted  
 holdings should  be offered  to their former occupants  
 as an inducement for them  to return.  The majority  
 of  these emigrants belong to the poorer classes, who,  
 owning no property of  their own, were compelled  to  
 gain  their  living  by working  for  others,  and  would  
 gladly  avail  themselves  of  the  opportunity  for  acquiring  
 a few palms of their own by which to support  
 themselves and their families. 
 It  is  difficult  to  exaggerate  the  importance  of  
 Twat  to  the  State  aspiring  to  be  the  paramount  
 power  in  North-West  Africa,  for  not  only  is  it  an  
 important  market  for  European  manufacturers and 
 the chief entrepôt for the desert trade, but its possession  
 carries  with  it  the  control  of  nearly  all  the  
 caravan  routes  of  the Western  Sahara.  Twat  lies  
 near the centre  of  the  Sahara,  and  so  forms  a  convenient  
 resting-place  for  the  merchants  engaged  in  
 the  trans-Saharan  trade.  The  great  belt  of  sand-  
 dunes in which it is situated  crosses the desert  from  
 east to west, and must be traversed by every caravan  
 bringing  goods  from  the  Sudan  to  the  Barbary  
 States,  or  vice  versâ.  Two  rivers  only  the  Wad  
 Saura  to  the  west  and  the Wad  Igharghar  to  the  
 east—traverse entirely this belt of dunes.  The Wad  
 Saura, formed by the  junction near Igli of  the Wad  
 Zusfana with  the Wad  Ghir, flows  across the sand-  
 belt  down  the  western  side  of  Twat,  until  it  loses 
 itself in the desert sands beyond. 
 To  this  great  stream  the  Twat  oases  owe  their  
 importance, and  to  a  large  extent  their  very  exist  
 ence,  for  not  only  does  it  bring  down  a very large  
 part of the water which  fertilises and  renders  habitable  
 the  desert  in  which  they  are  placed,  but  its  
 valley  forms  an  easy  natural  highway,  plentifully  
 supplied  with  wells,  through  the  dunes  by  which  
 they are surrounded.  Anyone who has ever travelled  
 in the sand-dune districts  of  the  Sahara  knows  the  
 enormous  strain which  the  continual  climbing  and  
 descending  over  the  alternate  ridges  and  hollows  
 of  such  a  country  imposes  upon  the  heavily-laden  
 camels of  a  caravan, and will easily understand that  
 the  majority  of  those  crossing  the  Sahara  readily  
 avail  themselves  of  this  easy  road  for  conducting  
 their  camels,  already partly exhausted  by  a  lengthy