Am.  Jour.  Phaem.  ) 
Mar.  1,  1873.  j 
Iodized  Albumen,  etc. 
125 
ing  ten  or  twelve  hours,  it  again  regained  its  original  color ;  it  then 
no  longer  gave  the  reaction  with  starch,  except  under  the  influence  of 
chlorine  water  or  nitric  acid  containing  hyponitric  acid.  Even  these 
were  not  sufficient  to  set  free  some  portion  of  the  iodine,  it  being  neces- 
sary to  incinerate  with  potash  in  order  to  obtain  it  in  the  state  of 
iodide  of  potash.  Professor  Guerri  found  afterwards  that  even  during 
the  evaporation  of  the  albumen  to  dryness  the  iodine  remained  in  com- 
bination, and  that  during  the  process  some  white  flakes  appeared, 
which  separated  upon  standing,  and  redissolved  in  a  very  small  quan- 
tity of  potash. 
According  to  careful  experiments  of  Professor  Guerri,  100  parts  of 
this  iodized  albumen,  that  had  been  dried  at  60°  C,  contained  3432 
parts  of  iodine ;  and  474  parts  of  solution  of  albumen  of  3°  Beaume 
density,  when  so  evaporated  yielded  31*928  parts  of  iodized  albumen, 
whilst  31-928  parts  of  iodized  albumen  contained  1  part  of  iodine. 
The  iodized  albumen  forms  yellow  transparent  scales,  soluble  in  wa- 
ter, with  the  exception  of  a  few  flakes  which  are  not  dissolved  by  ace- 
tic acid  or  phosphoric  acid,  but  are  dissolved  by  alkalies.  The  solu- 
tion is  precipitated  by  alcohol,  is  neutral,  and  gives  no  iodine  reac- 
tion. 
In  order  to  obtain  a  ferruginous  preparation  of  the  strength  before 
mentioned,  Professor  Guerri  dissolved  18  parts  of  ferric  citrate — cor- 
responding to  five  parts  of  ferric  oxide — in  474  parts  of  solution  of 
albumen  3°  Beaume  density,  previously  iodized,  and  evaporated  the 
solution  at  a  temperature  of  60°  C,  to  dryness.  This  gave  50  parts 
of  a  compound  containing  one-third  of  ferric  citrate. and  two-thirds  of 
iodized  albumen.  The  product  so  obtained  has  the  appearance  of  fer- 
ric citrate,  but^is  a  little  yellower.  The  solution  comports  itself  simi- 
larly to  the  iodized  albumen.  The  iron  is  not  separated  from  it  by 
alkalies,  or  by  ferrocyanide  of  potassium,  but  is  separated  by  the  al- 
kaline sulphides. 
Each  of  these  preparations  is  easily  formed  into  a  pill  mass  with 
simple  syrup,  as  well  as  with  extracts  not  containing  much  tannic 
acid.  They  can  also  be  administered  in  powder. — Pharm.  Jour,  and 
Tram.,  Dec.  14,  from  U  Union  Pharm.,  1872,  289. 
