304  ON  SOME  PHARMACEUTIC  PREPARATIONS. 
or  after  every  other  available  solvent  lias  been  used.  But,  in 
making  a  Fluid  Extract  of  Ergot,  the  object  will  be  to  present 
the  valuable  constituents  recombined,  which,  as  will  be  shown, 
requires  the  treatment  for  analysis  to  be  reversed.  If  the  solu- 
tions obtained  by  the  different  menstrua  employed  have  to  be 
recombined,  it  follows  that  the  solution  first  obtained  must  be 
reserved  until  that  last  obtained  has  exhausted  the  material  under 
treatment ;  and  as  aqueous  solutions  of  organic  substances  are 
very  liable  to  chemical  change  when  kept,  the  necessity  of  em- 
ploying the  water  last  is  apparent.  On  the  other  hand,  the  ne- 
cessity for  using  the  ether  first  in  displacing  for  a  fluid  extract 
is  also  apparent,  as  it  brings  away  with  the  oil  one  of  the  resins 
insoluble  in  the  different  menstrua  subsequently  to  be  employed, 
and  thus  removes  an  impediment  to  the  success  of  the  processes 
which  follow. 
ON  SOME  PHARMACEUTIC  PREPARATIONS. 
By  John  T.  Plummer,  M.  D. 
Liquor  Morphia?  Sulphatis,  U.  S. — I  do  not  know  that  any 
of  our  authorities  speak  of  this  preparation  as  being  any  other 
than  a  permanent  solution.  According  to  my  experience,  how- 
ever, it  certainly  ought  to  be  classed  with  the  extemporaneous 
remedies.  That  it  was  not  likely  to  be  a  durable  solution  might, 
indeed,  have  been  inferred  from  the  nature  of  the  constituents. 
But  as  it  is  desirable  to  have  a  lasting  preparation  of  this  salt 
in  a  fluid  form,  without  objectionable  additions,  I  devised  the 
following  formula  some  years  ago,  and  have  made  my  solutions 
of  sulphate  of  morphia  according  to  it  ever  since ;  and  as  the 
experience  of  several  years  has  satisfied  me  of  the  durability  of 
the  preparation,  as  well  as  of  the  efficacy  of  it  as  a  therapeutic 
agent,  I  feel  no  hesitancy  in  recommending  it. 
Morphise  Sulphatis,  grs.  viii. 
Aquae  destillatas, 
Syrupi  ana  f.^iv. 
Spt.  Etheris  Comp.  f.31. 
Dissolve  the  salt  in  the  water,  add  the  syrup,  shake  the  mix- 
ture, and  then  add  the  Hoffman's  Anodyne. 
If  this  solution  should  prove  to  be  too  thin  a  syrup  for  warmer 
