456     Collection  of  Gum  Senegal  in  Senegambia.  {kKbilvi,m3^ 
of  Chondodendron,  which  is  the  drug  on  which  the  reputation  of  Pa- 
reira  Brava  was  originally  founded. 
In  Brazil  this  root  is  regarded  as  the  legitimate  sort,  and  is  still 
held  in  the  highest  esteem. 
Though  it  has  not  been  clearly  recognized  by  European  writers,  it- 
is  not  altogether  unknown.  Gruibourt*  seems  to  have  been  acquainted 
with  it  and  even  correctly  surmised  its  botanical  origin.  It  is  the- 
root  figured  by  Gobel  and  Kunze,f  and  there  is  an  old  specimen  of  it 
in  the  Pharmaceutical  Society's  Museum  marked  Pareira  Brava.  I 
myself  met  with  it  in  the  market  in  1862.  Lastly,  Dr.  Squibb  has 
pointed  out  J  that  some  small  lots  of  Pareira  Brava  imported  into  New 
York  in  1871  consisted  in  large  part  of  a  drug  entirely  different  from 
any  previously  seen,  and  that  he  at  first  supposed  it  an  adulteration 
but  that  subsequent  examination  had  shown  him  that  the  drug  in 
question  agreed  well  with  the  older  descriptions  of  Pareira  Brava,. 
and  especially  with  Pomet's  figure,  so  that  he  was  convinced  it  was 
true  Pareira  Root.  From  Dr.  Squibb's  description  I  feel  sure  that 
the  drug  before  him  was  the  same  as  that  to  which  I  have  called  at- 
tention in  the  present  paper. 
There  can  be  no  doubt  that  it  would  become  plentiful  if  the  demand 
should  arise,  and  that  it  would  advantageously  replace  the  worthless 
kind  now  found  in  the  drug  trade. — Pharm.  Journ.,  Aug.  9,  1873. 
THE  COLLECTION  OF  GUM  SENEGAL  IN  SENEGAMBIA.g 
By  Dr.  Beranger  Feraud. 
Since  the  discovery  of  Senegambia,  the  gum  of  the  country  has 
been  one  of  the  principal  objects  of  exchange  between  Europeans 
and  the  indigenous  blacks,  and  the  traffic  has  been  so  extensive  and 
important  that  even  the  policy  of  the  country  has  sometimes  been 
subordinated  to  it.  Senegal  gum  is  yielded  by  several  trees  of  the 
same  genus  [Acacia  arabica,  A.  Seyal,  A.  Verek,  A.  Adansonii)y 
and  it  cannot  be  pretended  that  all  the  species  are  yet  known.  These 
gum  trees,  which  grow  in  the  Sahara  regions,  are  cultivated  by  the 
*  Hist,  des  drog.,  ed.  4,  iii.  (1850)  671. 
f  Pharm.  Waarenhunde,  ii.  (1830-34)  tab.  13,  fig.  1,  b-c. 
X  American  Journal  of  Pharmacy,  March  1,  1872,  107. 
\  L'  Union  Pharmaceutique  [Bulletin),  i,  67,  from  a  memoir  on  the  natural 
products  of  Senegambia,  published  iu  the  Moniteur  Official  de  Senegal. 
