530 
Emulsion  of  Cod  Liver  Oil. 
f  Am.  Jouk.  Phaem. 
t     Dec.  1, 1873. 
lent  proportions,  and  obtained  a  solution  possessing  the  qualities  and 
general  appearance  of  the  so-called  tasteless  salts.  Calculating  from 
the  formula,  the  dried  salt  should  yield  13-918  per  cf.  of  ferric  oxide, 
I  ignited  several  portions,  but,  owing  to  the  absence  of  crystallization 
and  the  varying  degree  of  moisture,  failed  in  obtaining  exact  results. 
The  potassio-ferric  oxalate  is  another  of  these  double  salts.  It  may 
be  obtained  by  mixing  solutions  of  ferric  oxalate  and  neutral  potas- 
sium oxalate  in  the  proportion  of  one  molecule  of  the  former  to  three 
of  the  latter,  as  follows  : 
Fe23C204  +  3K2C204  =  2  (K3Fe"'3C204). 
On  evaporating  the  solution  the  salt  may  be  obtained  in  beautiful 
green  crystals,  freely  soluble  in  water  but  insoluble  in  alcohol.  It 
possesses  the  same  quality  of  tastelessness,  without  astringency,  as 
the  double  citrate,  and  has  the  advantage  of  being  stable,  easily  ob- 
tainable in  crystals,  and  therefore  more  definite  in  composition. 
Whether  it  is  expedient  to  employ  a  mixture  of  two  different  com- 
pounds in  place  of  a  definite  preparation,  is  a  question  for  the  physi- 
cian to  answer  ;  but  it  seems  probable  that  if  he  wishes  to  give  iron 
in  combination  with  chloride,  iodide  or  pyrophosphate  of  ammonium, 
sodium  or  potassium,  as  the  case  may  be,  he  would  prefer  to  order  it 
so  in  his  prescription.  The  tendency  of  late  years  has  been  towards 
the  employment  of  more  concentrated  remedies  in  place  of  the  cum- 
brous formulas  of  ancient  times. 
EMULSION  OF  COD  LIVER  OIL. 
By  Willard  M.  Rice,  Jr. 
(Read  at  the  Pharmaceutical  Meeting,  November  18.) 
The  high  and  important  position  occupied  by  cod  liver  oil  in  the 
lists  of  the  materia  medica,  has  induced  many  pharmacists  and  others 
to  turn  their  attention  to  perfecting  some  mode  by  which  this  nau- 
seous remedy  may  be  rendered  palatable  and  acceptable.    Many  of 
the  formulae  so  elaborated  have  been  published  in  this  and  other 
pharmaceutical  journals,  while  it  is  to  be  regretted  that  others  have 
been  withheld,  thus  placing  their  authors  in  the  constantly  increasing 
lists  of  nostrum  venders.    But  none  of  the  efforts  thus  far  made  have 
succeeded  in  completely  masking  the  unpleasant  fishy  taste  and  smell 
of  cod  liver  oil,  although  some  approach  very  nearly  to  this  "  con- 
summation devoutly  to  be  wished." 
