PHARMACEUTICAL  NOTICES. 
409 
PHARMACEUTICAL  NOTICES. 
Liquor  Ferri  Iodidi. 
Much  has  been  written  on  this  instable  preparation.    As  we 
have  had  no  difficulty  with  it  for  the  past  three  years,  we  would 
like  to  add  our  mite  to  the  common  stock  as  follows  : 
R.  Iodine  . 
Iron       .  3i. 
Sugar  .  J  xx.* 
Water    .  .  f.£x. 
Mix  the  iodine  with  five  fluid  ounces  of  water  in  a  flask,  add 
the  iron  filings  and  occasionally  agitate  the  mixture,  until  the 
iodine  has  entirely  combined  with  the  iron  (known  by  the  light 
green  color  produced,)  filter  through  paper  into  a  flask  contain- 
ing the  sugar,  wash  the  filter  with  the  remaining  five  fluid  ounces 
of  water  and  boil  thoroughly  for  several  minutes ;  a  slight  scum 
will  arise,  which  remove  by  draining ;  bottle,  cork  tightly  until 
cold,  then  agitate  sufficiently  to  incorporate  the  water,  which 
will  have  condensed  in  the  neck  of  the  bottle,  and  nothing 
further  is  necessary,  as  it  will  keep  loosely  stopped  for  an  inde- 
finite period,  the  strength  is  the  same  as  the  officinal,  and  the 
increase  of  sugar  does  not  seem  objectionable. 
Hydrargyri  Iodidi  Rubri. 
Many  who  have  prepared  this  article  have  no  doubt  noticed 
the  waste  incurred  by  its  adhering  to  the  sides  of  the  vessel 
used  in  precipitating  it,  and  also  to  the  filter ;  we  have  adopted 
the  plan  of  having  both  solutions  hot  and  more  concentrated  at 
the  time  of  precipitation,  by  which  means  the  iodide  is  thrown 
down  somewhat  more  dense  and  the  "  pasty "  character 
avoided. 
*[Note.  It  is  presumed  that  "  Thuja  "  intends  the  sugar  to  be  weighed 
with  avoirdupois  weight,  ^xx.  troy  with  ^iiss.  of  the  iodide  of  iron  would 
hardly  be  retained  in  solution  in  the  bulk  of  f^xx.,  as  we  know  it  would 
not  be  in  the  absence  of  the  iodide.  The  anonymous  position  assumed  by 
Thuja  prevents  our  consulting  him,  and  suggests  the  propriety  of  his  drop 
ping  his  "  nom  de  plume." — Ed.  Am.  Jour.  Phar. 
