^'"Dec"i875^^'"'"}    Gkanings  from  the  Foreign  Journals.  541 
Mixed  in  this  order,  the  above  makes  a  perfectly  clear  and  stable 
solution  ;  also,  the  following  : 
Camphor  liniment,  ....  two  parts 
Castor  oil,     .....  two  parts 
Turpentine,  .....  two  parts 
Glacial  acetic  acid,       ....  one  part 
These  proportions  may  be  conveniently  modified  and  volatile  oils 
added,  if  desired.  A  fixed  oil,  soluble  in  alcohol,  seems  essential,  as 
a  blending  medium,  to  obtain  a  perfect  solution. — Ih'id..^  Sept.  4. 
[For  turpentine^  in  these  formulas,  the  oil  of  turpentine  appears  to  be 
intended.] 
Goto  Bark. — Under  this  name  a  bark,  coming  from  the  interior  of 
Bolivia,  was  received  in  Hamburg,  and  submitted  to  Dr.  Wittstein  for 
chemical  analysis.  The  constituents  were  found  to  be  a  highly  aro- 
matic volatile  oil,  having  a  biting,  peppery  taste  ;  a  volatile  alkaloid, 
probably  propylamia  or  trimethylamia  ;  a  soft,  aromatic  resin,  with  a 
biting  taste  ;  a  brown,  brittle  resin,  the  alcoholic  solution  of  which  has 
a  bitterish  taste,  and  which  is  insoluble  in  ether,  benzol,  chloroform 
and  bisulphide  of  carbon.  Besides  the  preceding,  the  following  con- 
stituents were  found,  in  smaller  quantities  :  starch,  gum,  sugar,  oxalate 
of  calcium,  tannin  (turning  iron  salts  green),  formic,  butyric  and  acetic 
acids. 
Though  the  tree  yielding  the  bark  was  stated  to  be  a  species  of  cin- 
chona, the  microscopical  examination  made  by  Prof.  C.  Harz  proved 
this  not  to  be  the  case  ;  the  bark  comes  most  likely  from  a  lauraceous 
or  terebinthaceous  tree.  The  bark  has  been  employed  in  the  Munich 
Hospital,  by  Prof,  von  Gietl,  who  regards  it  as  a  specific  against  diar- 
rhoea in  the  most  varied  modifications.  The  remedy  was  used  in  doses 
of  0*5  gram,  four  to  six  times  daily,  in  the  form  of  powder,  which 
occasionally  produced  emesis.  The  tincture  was  made  by  macerating 
one  part  of  the  powdered  bark  with  nine  parts  of  alcohol,  and  was 
given  in  doses  of  ten  drops  every  two  hours. — Archiv  d.  Phar..^  1875, 
Sept.,  p.  213-223. 
Method  for  Preparing  Mercurial  Ointment. — Dr.  Richard  Mors  pro- 
poses the  following  : 
Put  into  an  iron  or  stone  mortar  : 
Mercury,      ......  500  grams 
Mercurial  ointment,  1-2  mercury,       .  .  .60  grams 
Glycerin,      .  .  .  .  .  -30  grams 
