244 
Pharmaceutical  Notes. 
/  Am.  Jour.  Pharm. 
(      May,  1881. 
situated  not  alone,  but,  as  stated,  in  bundles  of  nearly  right  angular- 
form.  By  the  use  of  a  lens,  or  by  microscopical  examination,  the  bark 
of  Q.  Colorado  may  thus  be  easily  distinguished  from  the  Q.  bianco, 
even  when  the  diiference  in  taste  is  not  considered. 
In  concluding  his  valuable  review  of  quebracho  bark  the  author 
gives  also  a  sketch  of  the  development  of  the  chemistry  of  the  subject,, 
for  the  principal  results  of  which  the  reader  is  referred  to  abstracts  in 
this  journal  (1879,  p.  192  and  554-557),  as  also  to  the  more  recent 
contribution  of  O.  Hesse,  contained  in  the  last  number. 
PHARMACEUTICAL  NOTES. 
By  Robt.  F.  Faikthorne,  Ph.G. 
Meigs''  Mixture  of  Gentian  and  Iron. — As  this  is  not  unfrequently 
called  for,  it  may  be  as  well  to  give  the  formula  and  mode  of  prepara- 
tion, as  ordered  by  Dr.  J.  F.  Meigs  of  this  city : 
H       Ferri  et  amnion  ii  citratis,  .  .  -Si 
Extr.  geiitiaiiie  fluid.,  .  .  .  f^ss 
Spirit,  la  valid,  co.,        .  .  .  .  f^i 
Spirit,  vini  rect.,  ....  f^ss 
Saccliar.  alb.,    .  .  .  .  •  .li^s 
Aqua^,        .  .  .  .  (j.  s.  iit.  ft.,  f5viii 
Mix  the  extract  with  1  ounce  of  water,  and  add  the  compound  spirit 
of  lavender,  treat  this  with  hydrated  oxide  of  iron,  and,  having  fil- 
tered it,  mix  with  tlie  other  ingredients  and  filter. 
Chloralum. — This  appears  to  be  simply  a  solution  of  chloride  of 
aluminum,  and  has  the  specific  gravity  of  J '244.  (For  analyses  see- 
''Amer.  Jour.  Phar.,''  1872,  p.  268  and  397.)  An  imitation  of  it  can 
be  made  by  mixing  alumina  with  about  twice  its  bulk  of  water,  and 
dissolving  this  base  in  strong  muriatic  acid,  by  the  aid  of  heat,  in  a 
capsule,  and  continuing  the  evaporation  until  any  excess  of  uncombined 
hydrochloric  acid  is  driven  oif;  when  cool  dilute  the  solution  with 
sufficient  water  to  reduce  the  specific  gravity  to  1*244  at  60°F.  Should 
any  deposit  occur  before  adding  the  water  the  solution  should  be  first 
filtered  through  cotton. 
Elixir  Glycyrrhizini. — This  will  be  found  unusually  effectual  in  dis- 
guising the  bitter  taste  of  quinia,  and  is  prepared  by  the  following 
formula:  A  tincture  of  liquorice  is  made  first,  from  which  the  sweet 
principle  is  obtained  thus: 
