ON  SYRUP  OF   IODIDE  OF   IRON  AND  MANGANESE. 
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salts  of  iron  and  manganese  in  combination,  when  preparations  of 
iron  alone  have  heretofore  been  indicated.  Among  the  compounds 
used  by  M.  Petrequin,  is  a  syrup  of  iodide  of  iron  and  manganese, 
but  the  method  suggested  for  its  preparation  from  the  solid  iodides, 
by  M.  Burin-Uubuisson  is  too  indefinite  to  be  generally  adopted, 
besides  involving  the  necessity  of  -previously  preparing  and  keep- 
ing the  solid  iodides.  The  following  formula  yields  a  preparation 
of  the  strength  of  the  officinal  syrupy  solution  of  iodide  of  iron, 
and  the  manner  of  using  it,  and  the  doses  are  the  same. 
Take  of  Iodide  of  Potassium,  .  .  .  1000  grains. 
Proto-sulphate  of  iron,  (in  crystals,)  630  " 
Proto-sulphate  of  manganese,  "  .  210  " 
Iron  filings,  (free  from  rust,)  .  .  100  " 
White  sugar,  (in  coarse  powder,)  .  4800  " 
Distilled  or  boiled  water,  a  sufficient  quantity. 
Triturate  the  sulphates  and  the  iodide  separately  to  powder, 
mix  them  with  the  iron  filings,  add  half  a  fluid  ounce  of  distilled 
water,  and  triturate  to  a  uniform  paste.  After  standing  a  few 
minutes,  again  add  half  a  fluid  ounce  of  distilled  water,  triturate 
and  allow  it  to  rest  fifteen  minutes.  A  third  addition  of  water 
should  now  be  made  and  mixed.  The  sugar  should  then  be  intro- 
duced into  a  bottle  capable  of  holding  a  little  more  than  twelve 
fluid  ounces,  and  a  small  funnel,  prepared  with  a  moistened  filter, 
inserted  into  its  mouth.  The  magma  of  salts  should  then  be  care- 
fully removed  from  the  mortar  to  the  filter,  and  when  the  dense 
solution  has  drained  through,  distilled  or  boiled  water  shouldbe 
carefully  poured  on  in  small  portions,  until  the  solution  of  the 
iodides  is  displaced  and  washed  from  the  magma  of  crystals  of 
sulphate  of  potash.  Finally,  finish  the  measure  of  twelve  ounces, 
by  adding  boiled  water,  and  agitate  the  bottle  until  the  sugar  is 
dissolved.  The  solution  of  the  sugar  may  be  facilitated,  when 
desirable,  by  standing  the  bottle  in  warm  water  for  a  time,  and 
then  agitating. 
Each  fluid  ounce  of  this  syrup  contains  fifty  grains  of  the  mixed 
anhydrous  iodides  in  the  proportion  of  three  parts  of  iodide  of 
iron  to  one  part  of  iodide  of  manganese,  and  the  dose  is  from  ten 
drops  to  half  a  fluid  drachm. 
