154  Emulsions  of  Cod-Liver  OIL  {^Ti]!™"* 
Boil  once  and  strain.  To  render  spoiling  (even  in  the  hottest  sum- 
mer) next  to  impossible,  fill  in  two  or  four  oz.  vials  (according  to  busi- 
ness) up  to  the  stoppers,  and  lay  them  in  the  cellar  on  their  sides. 
If  that  is  too  much  trouble,  the  addition  of  gr.  vj  of  bisulphite  of 
lime  to  the  above  quantity  will  retard  spoiling  for  a  very  long  time. 
Tinetura  Rhei  Aquosa. 
According  to  the  Prussian  Pharmacopoeia,  take 
Rhei  cone,  .  .  .    pt.  xii. 
Potass,  carbon.,      .  .  .    pt.  iii. 
Macerate  in 
Aquae  cinnam.  spirit.,         .  .    pt.  xvi. 
Aquse,        .  .  .  .    pt.  xcvi. 
for  24  hours,  strain,  let  deposit,  and  filter. 
This  forms  a  beautiful  dark  reddish-brown  tincture,  which,  how- 
ever, spoils  quite  as  quickly  as  syrupus  althaeae,  getting  sometimes 
gelatinous,  and  always  turbid. 
I  have  been  using  to  advantage  Mr.  Bille's  aqueous  fluid  extract 
of  rhubarb  (see  Am.  Jour.  Pharm.,  vol.  xliv,  p.  483)  in  making  this 
tincture,  as  follows  : 
Fl.  extr.  rhei  aquos.,         .  .  f^i. 
Potass,  carbon.,      .  .  .  3ii. 
Aquae,       ....  fjviss. 
Add        Alcohol,  .  .  .  f^ss. 
01.  Cinnam.  .  .  .    gtt.  ii. 
Said  aqueous  fid.  extr.  of  rhubarb  would  form  a  very  useful  addi- 
tion to  the  list  of  preparations  in  the  next  Pharmacopoeia. 
EMULSIONS  OF  COD-LIVER  OIL. 
By  William  G.  Moffit. 
Extracted  from  an  Inaugural  Essay. 
The  cod-liver  oil  now  found  in  our  market  is  more  pleasant  to  the 
taste  than  what  was  formerly  met  with,  due,  in  a  great  measure,  to* 
the  competition  in  its  manufacture. 
But,  notwithstanding  the  fineness  of  the  oil,  and  the  almost  total 
absence  of  the  disagreeable  fishy  odor  (so  strong  in  common  cod-liver 
oils),  it  requires  a  strong  effort  on  the  part  of  many  persons  to  become 
used  to  taking  it.  This  is  especially  the  case  with  ladies  and  child- 
ren, or  in  fact  any  who  have  weak  stomachs.    Its  taste  and  odor  has 
