jsiLm.  Jour.  Pliarm. ) 
May,  1881.  | 
Phormaceulical  Notes. 
245 
Take  of   Liquorice  root,  in  moderately  flue  powder,  5viii 
Liquor  animonije,     .  .  .  .  f^ii 
Glycerin,  .  •  .  .  f^i 
Dilute  alcohol,  .  .      sufficient  quantity. 
Mix  the  glycerin,  solution  of  ammonia  and  half  pint  of  diluted  alco- 
iiol.  With  2  fluidounces  of  this  mixture  moisten  the  liquorice  root; 
pack  in  a  percolator  and  pour  on  the  remainder.  Displace  with  dilute 
.alcohol  until  8  fluidounces  of  tincture  are  obtained.  In  order  to 
obtain  the  glycyrrhizin  add  nitric  acid  to  it  in  small  portions  at  a  time 
•as  long  as  any  precipitate  occurs;  set  aside  in  a  cool  place  (an  ice 
•ehest,  for  instance)  for  5  or  6  hours.  Pour  off  the  supernatant  clear 
fluid,  which  is  thrown  away,  and  place  the  remainder  on  a  paper  filter. 
After  the  liquid  portion  has  been  thoroughly  drained  carefully  scrape 
^ff  the  solid,  which  is  impure  glycyrrhizin.  This  is  placed  in  a  mor- 
tar and  dissolved  in  2  fluidounces  of  water  by  means  of  solution  of 
ammonia,  which  is  to  be  added  very  carefully  so  as  not  to  have  any 
excess.  Filter  the  solution,  and  add  it  to  the  following  mixture, 
ijiamely : 
Glycerin,  .  .  .  .2  fluidounces 
iSyrup,  .  .  .  .        3  " 
Cura(?oa  cordial,     .  .  .  .  4  " 
Water,  sufficient  to  make  the  elixir  measure  12  fluidounces, 
and  filter. 
Ammonium  Bitartrate. — When  a  strong  solution  of  tartaric  acid  is 
•added  either  to  the  stronger  solution  of  ammonia  or  to  a  saturated 
solution  of  ammonium  carbonate,  so  that  there  will  be  an  excess  of 
acid,  a  white  crystalline  precipitate  is  produced  corresponding  in  appear- 
ance and  taste  to  cream  of  tartar.  This  salt,  which  may  also  be  pre- 
pared by  mixing  concentrated  solutions  of  1  part  of  ammonium  chlo- 
ride and  3  parts  of  tartaric  acid,  may  possibly  find  a  place  either  com- 
mercially or  medicinally  amongst  the  useful  articles  of  trade  or  med- 
icine. 
Poiudered  French  Chalk;  some  of  its  Uses. — This  common  article 
will  be  found  useful  to  the  druggist  for  many  purposes,  tn  using  the 
pill  compressing  machine,  for  instance,  its  peculiar  property  for  pre- 
venting adhesion  will  be  duly  appreciated  by  all  who  try  it.  When 
used  for  this  purpose  all  that  is  necessary  is  to  place  it  in  a  deep  box 
(a  4-oz.  turned  wooden  one  will  do),  which  should  be  half  full,  and 
after  each  pill  has  been  finished  and  taken  out  of  the  mould  the  die 
should  be  dipped  into  the  powder,  when  sufficient  will  be  found  adher- 
