Am.  jour.^iMmrm.|    EUxlvs  of  Quiuine,  Simple  and  Compound.  481 
Dissolve  tlie  sugar  in  4  pints  of  water  and  add  18  fluidounces  of 
alcohol.  Rub  the  oils  thoroughly  with  the  precipitated  calcium  car- 
bonate and  then  gradually  add,  with  constant  stirring,  8  to  10  fluid- 
ounces  of  the  preceding  mixture. 
Pour  this  now  into  the  remainder  of  the  saccharine  solution  and  set 
the  mixture  aside,  shaking  it  up  frequently ;  then  after  an  interval  of 
about  two  hours  filter  it,  returning  the  first  turbid  portion,  and  when 
all  has  passed  through  follow  with  water  until  the  filtrate  measures  7J 
pints. 
Upon  the  calcium  hypophosphite  pour  2  fluidounces  of  water  and 
warm  the  mixture  on  a  water-bath.  Now  add  the  sulphates  of  the 
alkaloids,  and  when  double  decomposition  is  complete  remove  the  mix- 
ture from  the  water-bath  and  gradually  add  4  fluidounces  of  alcohol ; 
then  pour  it  into  a  small  filter,  and  when  all  the  liquid  has  passed 
through  follow  with  alcohol  until  the  filtrate  measures  8  fluidounces. 
Then  pour  this  into  the  simple  elixir  first  obtained  and  mix  the 
whole. 
It  was  experimentally  found  that  when  ferric  citrate,  sodium  phos- 
phate and  quinine  are  combined  soluble  double  salts  only  resulted 
when  having  the  composition  4(FeCi)Na2(QuH)P04,  and  4(FeCi)]N'a- 
(QuH)HP04.  These  could  be  produced  in  elegant  olive  tinted  scales^ 
but  since  they  did  not  appear  to  redissolve  in  cold  water,  although 
freely  so  when  hot,  their  hydrous  water,  if  any,  was  not  determined. 
Ferric  citrate  and  quinium  hypophosphite  combined,  in  whatever 
proportion,  yield  no  soluble  double  salts;  the  presence  of  other  hypo- 
phosphites  appears  to  be  necessary. 
A  grass-green  scaled  salt,  having  the  formula  2(FeCi)]SraPy(QuH)^ 
Py.Aq.,  readily  soluble  in  f  alcohol  and  in  considerably  stronger  alco- 
hol, yet  only  sparingly  soluble  in  weaker  alcohol,  can  be  easily  pre- 
pared. It  is  very  difficultly  soluble  in  cold,  but  abundantly  soluble 
in  hot  water. 
An  apple-green,  very  soluble  but  non-deliquescent,  scaled  salt  ha& 
the  formula  3(FeCi)NaPy(QuH)Py.  Its  hydrous  water  was  not 
ascertained,  but,  as  it  can  be  obtained  in  two  very  different  forms,  it 
appears  probable  that  hydrous  water  is  present  in  one  of  the  two  con- 
ditions at  least.  When  a  concentrated  solution  is  permitted  to  dry  up 
spontaneously,  a  scaled  but  opaque  residue  remains,  indicating  a  homor- 
geneous  crystalline  tendency.    If,  however,  the  solution  is  coneen- 
31 
