ADVENTURES  AND  EXPLORATIONS.  443

He  informed  us  that,  a  short  distance  below,  this  rirei
finally  disappeared.  The  two  diiTerent  portions  in  which  wa-
ter is  found  had  received  from  the  priests  two  different  names  ;
and  subsequently  I  heard  it  called  by  the  Spaniards  the  Rw
de  las  Animas,  but  on  tb  i  map  we  have  called  it  the  Mohahve
t'i  ver,

24th. — We  continued  down  the  stream  (or  rather  its  bed)
for  about  eight  miles,  where  there  was  water  still  in  several
holes,  and  encamped.  The  caravans  sometimes  continued  be-
low, to  the  end  of  the  river,  from  which  there  is  a  very  long
Jornada  of  perhaps  60  miles,  without  water.  Here  a  singular
and  new  species  of  acacia,  with  spiral  pods  or  seed-vessels,
made  its  first  appearance ;  becoming  henceforward,  for  a  con-
siderable distance,  the  characteristic  tree.  It  was  here  com-
paratively large,  being  about  20  feet  in  height,  with  a  full
and  spreading  top,  the  lower  branches  declining  towards  tho
ground.  It  afterwards  occurred  of  smaller  size,  frequently  in
groves,  and  is  very  fragrant.  It  has  been  called  by  Dr.  Tor-
rey,  spirolohium  odoratum.  The  zygophyllaceous  shrub  had
been  constantly  characteristic  of  the  plains  along  the  river ;
and  here,  among  many  new  plants,  a  new  and  very  remarka-
ble species  of  eriogonum  (eriogonum  injlatum,  Tor.  &  Frem.)
made  its  first  appearance.
