32 
GLEANINGS  FROM  FOREIGN  JOURNALS. 
of  lime,  with  probably  a  trace  of  the  sulphate  of  an  alkali. 
The  same  appears  to  have  been  observed  by  Scheele.  Guaiac 
wood  and  its  bark  show  besides  a  remarkable  difference  in  the 
respective  quantities  of  ashes  which  they  yield  ;  the  splint  or 
colorless  part  left  -916  per  cent,  of  ashes  ;  the  central,  dark- 
colored  and  resinous  wood  only  «6  per  cent.  The  bark  of  quassia, 
which  is  likewise  rich  in  oxalate  of  lime,  leaves  17-84  per  cent., 
the  wood  only  3-68  per  cent,  of  ashes.  The  crystals  contained 
in  tamarinds  Fliickiger  declares  to  be  those  of  tartrate  of  lime. 
The  latter  salt  is  likewise  present  to  a  considerable  extent  in 
the  quillaya  bark  ;  the  ashes  of  the  latter  contain  traces  of  li- 
thium, and  probably  rubidium. 
Oxalate  of  lime,  either  in  the  form  of  acicular,  prismatic,  or 
rhomboidal  crystals,  is  contained  also  in  Gort.Swieteniee  Senegal, 
Cort.  Strychnos,  N,  Vom.,  Pareirce,  Colombo?,  Ilippocastani, 
Pruni  Padi,  Cedrelce,  Scillo?,  Cohhici,  Veratri  [albi  (7)],  Chi- 
nee j  Sarsaparilla?,  Polygonati,  Paridis,  Iridis  Flor.,  Belladonna 
G-eoffroya?,  Simarubo?,  Lopez,  Cascarillce,  Cinehonce ;  also,  in 
Bad.  Bhei  and  other  Polygonacea?.  Saponarim,  Convolvuli  Ori- 
zab.,  Cort.  Crranat.  Bad.  etfructus,  Had.  Ipecacuanha?,  Bubice, 
Ipomoea?  Mechoacano?,  but  not  in  the  officinal  tubers  from  Exo- 
gonium  Purga.  Benth. 
Test  for  Tartar  Emetic. — As  such  C.  Glaus  {Pharm.  Zeits- 
chrift  f.  Bussland,  No.  12.  Schweizer  Wochenschr i ft  f.  Pharm. 
1863,  p.  135)  recommends  the  solution  of  perchloride  of  iron, 
which  produces  a  peculiar  reaction  with  not  too  strongly  acid 
solutions  of  tartar  emetic,  as  a  test,  that  serves  to  distinguish  it 
quite  readily  from  all  other  officinal  preparations  of  antimony. 
The  solution  of  iron  added  to  a  concentrated  solution  of  tho  tartar 
emetic  merely  gives  it  a  yellow  tinge,  but  when  the  solution  is 
largely  diluted  with  water  there  forms  at  once  a  yellow  precipi- 
tate of  the  color  of  chromate  of  lead.  In  a  very  dilute  solu- 
tion a  single  drop  of  the  iron  liquor  produces  at  once  this  pre- 
cipitate, which,  what  must  be  carefully  observed,  is  readily  so- 
luble in  an  excess  of  the  reagent.  If  less  than  sufficient  of  the 
latter  is  added  to  redissolve  the  precipitate,  it  assumes  a  gela- 
tinous consistence.  It  is  principally  oxychloride  of  antimony 
colored  by  iron,  and  contains  a  little  tartrate  of  antimony 
and  potassa,  which  cannot  be  removed  by  washing. 
