58       Formulas  of  so-called  Elegant  Preparations.  {Am-/e0br'i?7h6arm' 
wash  ;  dissolve  the  sulphate  of  quinia  in  the  same  quantity  of  cold 
water  by  the  aid  of  hydrochloric  acid,  precipitate  with  ammonia  water, 
collect  and  wash  ;  add  the  precipitates  and  the  strychnia  to  the  dilute 
phosphoric  acid  in  a  mortar,  stirring,  and  dissolve  any  remaining  pre- 
cipitate with  hydrochloric  acid,  filter,  then  add  sufficient  powd.  sugar 
to  make  one  pint. 
Syrup  of  lacto-phosphate  of  lime  : 
Phosphate  of  calcium,  ....  giv  and  16  grs. 
Phosphoric  acid  (dil.)  .  .  .  ^vii 
Lactic  acid  (dil.),      .  .  .  .  -  5l 
Hydrochloric  acid,  .... 
Sugar,  powdered,       .  .  .  .  .  ad  q.  s. 
Dissolve  the  calcium  phosphate  in  4  ozs.  of  water  with  hydrochloric 
acid,  precipitate  with  ammonia  water,  collect  and  wash  the  precipitate 
and  add  it  to  the  dilute  lactic  and  phosphoric  acids  in  a  mortar  ;  tritur- 
ate, dissolve  any  remaining  precipitate  with  hydrochloric  acid,  filter  and 
add  sufficient  powdered  sugar  to  make  one  pint. 
The  wine  of  lacto-phosphate  of  lime  may  be  made  in  the  same  way, 
by  using  sherry  wine  in  place  of  the  sugar. 
The  amount  of  hydrochloric  acid  necessary  to  insure  permanent 
solutions  will  amount  to  a  little  less  than  6  drachms  in  the  former  and 
4  drachms  in  the  latter,  though  one-half  of  this  quantity  would  be 
sufficient  to  form  a  solution,  but  the  preparations  would  scarcely  keep 
longer  than  two  or  three  months  without  precipitation,  unless  the  whole 
quantity  of  acid  be  used.  From  this  it  will  be  seen  that  the  amount 
of  hydrochloric  acid  used  will  be  sufficient,  or  nearly  so,  to  convert  all 
of  the  phosphates  contained  in  these  preparations  into  chlorides. 
Baltimore,  January,  1876. 
Note  by  the  Editor. — The  formula  given  above  for  the  syrup  of 
the  phosphates  of  iron,  quinia  and  strychnia  differs  from  Aitken's  for- 
mula, published  in  uAmer.  Jour.  Phar.,"  1867,  p.  178,  in  containing  a 
somewhat  larger  quantity  of  iron  and  less  phosphoric  acid.  The  pre- 
cipitate occurring  in  the  syrup  after  some  time  is  ferric  phosphate  (see 
"Amer.  Jour.  Phar.,"  1867,  p.  387),  and  may  be  prevented  by  using 
a  stronger  phosphoric  acid,  or,  as  suggested  by  the  author,  by  the  addi- 
tion of  a  sufficient  amount  of  muriatic  acid. 
For  other  formulas  for  syrup  of  lacto-phosphate  of  calcium,  we  would 
refer  our  readers  to  "Amer.  Jour.  Phar.,"  1873,  pp.  105,  221  and  234. 
