Am  Jour.  Pharm.  \ 
April,  1880,  / 
Albuminate  of  Iron, 
^nd  proportions)  were  added.  A  light-yellow  turbid  magma  was  pro- 
duced, which  was  mixed  with  an  equal  volume  of  water,  transferred  to 
a  filter  and  washed  with  water  until  the  washings  passed  colorless.  The 
residue  upon  the  filter,  which  was  quite  bulky,  formed  a  gelatinous 
mass  upon  standing,  and,  when  diluted  with  water  after  it  had  attained 
that  condition,  failed  to  pass  through  the  filter.  After  several  days  the 
•contents  of  the  filter  were  further  diluted  with  water  and  transferred 
to  a  new  filter,  when,  very  slowly,  the  solution  passed  through  the 
filter.  The  clear  liquid  yielded,  on  evaporation,  an  albuminate  of  iron 
in  the  form  of  transparent  yellowish-brown  scales.  Owing  to  unavoid- 
able loss  its  quantity  was  not  determined. 
8.  Simultaneously  with  this  experiment  (7)  a  parallel  experiment  . 
was  made  in  which  liq.  ferr.  chlor.  was  evaporated  to  dryness,  redis- 
■solved  in  water,  filtered  and  then  added  to  the  pure  egg-white  (corres- 
ponding to  Bernbeck's  method  and  proportions).  In  this  instance  a 
copious  precipitate  was  obtained  which  was  quite  distinct  from  that 
obtained  by  Friese's  method,  and  may  be  described  as  granular.  It 
was  very  readily  washed,  but  when  allowed  to  drain  over  night  it  had 
completely  changed  its  character.  A  gelatinous  thick  liquid  had  formed, 
a  portion  of  which  had  passed  through  the  filter,  and  was  consequently 
lost.  The  receiving  vessel  being  changed,  the  liquid  was  further  diluted 
with  water,  when  it  very  slowly  passed  through  the  filter,  forming  a 
•clear  liquid.  This  yielded  a  dry  albuminate  corresponding  in  appear- 
ance with  that  obtained  by  Exp.  7.    It  was  not  weighed. 
9.  Two  troyounces  of  egg-white  were  dissolved  in  7  fluidounces  of 
water,  5  fluidounces  of  solution  of  salt  added  and  the  solution  filtered. 
The  filtration  proceeded  quite  slow  when  compared  with  the  filtration 
of  a  similar  solution  of  albumen  to  which  ferric  chloride  had  been 
added  in  place  of  salt.  Upon  the  addition  of  25  minims  of  liq.  ferr, 
chlor.,  U.  S.  P.,  previously  diluted  with  fluidounces  of  water,  a 
precipitate  of  albuminate  of  iron  was  obtained,  just  as  in  the  instances 
in  which  the  inverse  process  was  employed,  and  the  filtrate  and  wash- 
ings gave  very  faint  evidence  of  albumen,  though  the  former  gave 
decided  evidence  of  iron.  The  albuminate  produced  had  the  same 
character  as  that  obtained  by  Exp.  i. 
10.  The  same  quantity  of  the  same  egg-white  was  dissolved  in 
water,  the  solution  mixed  with  solution  of  salt,  and  filtered  just  as  in 
Exp.  9.  Diluted  hydrochloric  acid  was  then  added  drop  by  drop.  When 
25  drops  had  been  added,  the  liquid  became  permanently  turbid  ;  with 
