342  Note  on  Dialyzed  Iron.  { A,r jifyu,r,l8P7h7arm' 
same  result  to  be  reached.  If  the  solution,  after  completion  of  the 
operation,  should  contain  more  than  5  per  cent,  of  iron,  it  may  be 
diluted  with  distilled  water  till  it  reaches  that  point.  There  are  some 
dialyzed  irons  in  market  which  we  have  examined,  containing  no  more 
than  from  3J  to  4  per  cent.  When  the  preparation  has  become 
thoroughly  dialyzed,  it  is  tasteless  and  neutral,  the  operation  should  be 
discontinued,  as  by  further  dialysis  the  liquid  is  converted  into  a  gela- 
tinous condition. 
We  may  say  in  closing,  that  the  above  formula  furnishes  an  article 
precisely  similar  to  the  original  Bravais'  Dialyzed  Iron,  which  we  have 
imported  and  had  ample  opportunity  for  comparison.  By  manufactur- 
ing it  in  this  country,  it  can  be  produced  for  about  one-half  the  cost  of 
the  imported. 
The  manner  of  taking  the  pure  concentrated  dialyzed  iron  is  gener- 
ally in  drops,  ranging  from  15  to  50  daily,  in  divided  doses,  on  sugar 
or  in  sugar  and  water  ;  suitable  vehicles  can  be  used  for  administration 
without  fear  of  decomposition.  Being  without  taste  and  odor,  com- 
patible with  syrup  and  alcohol,  and  communicating  no  taste  to  any 
suitable  vehicle,  it  is  easy  to  construct  formulae  for  elixir,  syrup,  etc., 
a  glycerite  we  find  to  be  an  excellent  preparation. 
These  preparations,  beside  being  more  acceptable  to  the  delicate  pal- 
ate, are  perhaps  preferable  on  account  of  the  dose  being  brought  up  to 
the  more  popular  measure  of  tea-  and  tablespoonful,  and  avoiding  the 
necessity  of  the  patient  mixing  them  with  any  other  liquid  before  taking. 
NOTE  ON  DIALYZED  IRON. 
By  John  M.  Maisch. 
Dialyzed  iron,  which  will  doubtless  become  one  of  the  most  valuable 
ferruginous  medicinal  agents,  has  been  recently  introduced  into  the 
United  States,  under  various  names.  Some  claiming  it  to  be  a  solution 
of  oxide  of  iron  in  water,  it  was,  and  is  still  frequently  called  in  Europe, 
ferrum  oxy datum  dialysatum  ;  but  like  the  very  similar  preparation,  ferrum 
oxy datum  saccharatum,  which  has  been  made  officinal  in  several  European 
pharmacopoeias  ("Am.  Jour.  Phar.,"  1873,  P*  »  J874>  P-  559)?  it  is 
nothing  more  nor  less  than  a  very  basic  oxychloride  of  iron.  To  pre- 
vent erroneous  conceptions  concerning  its  composition  gaining  a  foot- 
hold, a  brief  review  of  the  earlier  literature  on  the  subject  will  not 
be  out  of  place. 
