531  REVIEW  OF  PHARMACOPCEIA  HELVETICA. 
first  five  being  also  kept  in  a  dry  state  by  adding  to  two  parts  of 
the  extract  one  of  milk  sugar  and  one  of  liquorice  root,  exsiccat- 
ing at  a  temperature  of  40  to  50°  C,  and  adding  enough  sugar 
of  milk  to  make  the  whole  weight  four  parts,  when  it  is  reduced 
to  powder. 
Extractum  chelidonii  and  juglandis  nucum  are  the  only  two 
extracts  made  from  the  juice. 
Among  the  alcoholic  extracts  we  notice  yet  extr.  arnicas,  made 
from  a  mixture  of  1  part  flowers  and  2  parts  rhizome ;  extr. 
aurantii,  from  the  yellow  rind ;  extr.  calami,  pimpinellas,  jug- 
landis foliorum,  scillee,  senegas,  etc. 
Extractum  colocynthidis  compositum  is  not  equal  to  the 
American,  in  which  resin  of  scammony  is  used  and  all  the  aro- 
matic properties  of  the  cardamom  preserved,  though  we  believe 
it  may  be  improved  in  appearance.  The  Swiss  extract  is  obtained 
by  exhausting  with  alcohol  of  -890,  one  part  powdered  carda- 
mom, 3  of  soap,  4  of  Aleppo  scammony,  6  of  pulp  of  colocynth 
and  12  of  extract  of  aloes. 
Extractum  Rhei  compositum  consists  of  1  resin  of  jalap,  1 
soap,  2  extract  of  aloes,  triturating  with  4  alcohol,  adding  6 
extract  of  rhubarb  and  evaporating  to  dryness. 
Extractum  secalis  cornuti  is  identical  with  ergotin  of  Bonjean. 
Infusum  sennas,  the  Vienna  draught,  is  the  only  officinal  in- 
fusion. 
Of  the  fourteen  liquores,  liquor  ammonii  acetici  is  made  with 
caustic  ammonia ;  liquor  ferri  sesquichlorati  is  a  solution  of  the 
crystallized  sesquichloride  in  its  own  weight  of  water ;  liquor 
hydrargyri  nitrici  oxydulati,  a  solution  of  8  parts  of  protonitrate 
in  64  water  and  1  dilute  nitric,  acid ;  liquor  kali  acetici  is  ob- 
tained by  neutralizing  5  p.  carbonate  of  potassa  with  acetic  acid 
and  diluting  to  21  parts.  Liquor  kali  arseniosi  contains  ^  of  its 
weight  of  arsenious  acid  and  is  consequently  one-fourth  stronger 
than  our  Fowler's  solution.  Liquor  kali  caustici  has  a  spec, 
grav.  of  1-335— 1*340.  Liquor  plumbi  acetici  is  made  by  di- 
gestion and  decantation,  has  a  spec.  grav.  of  1*295 — 1*300  and 
contains  about  one-third  more  lead  than  our  Goulard's  extract. 
Liquor  stibii  chlorati  is  obtained  from  2  black  sulphuret  of  anti- 
mony and  10  hydrochloric  acid ;  the  solution  is  set  aside  for 
