Am.  Jour.  Pharm. ) 
Aug.,  1879.  j 
Aromatic  Sulphuric  Acid. 
387 
menstruum  to  make  up  the  required  quantity,  and  then  adding  it  to  the 
reserved  percolates. 
Neither  of  these  fluid  extracts  will  yield  a  transparent  preparation 
when  mixed  with  simple  syrup,  but  by  the  following  process  a  syrup 
may  be  made  from  either,  which  will  be  perfectly  transparent,  and  will 
keep  indefinitely. 
Syrup  of  Ipecacuanha. 
Take  of  Fluid  extract  of  ipecacuanha,  .  .      5  parts. 
Glycerin,     .  .  .  .  25  " 
Sugar,  .  .  .  .    50  " 
Water,       .  .  .  .a  sufficient  quantity. 
Add  the  fluid  extract  to  18  parts  of  water  and  filter,  when  the  fil- 
trate ceases  to  drop  add  2  parts  of  water  through  the  filter,  dissolve  the 
sugar  in  the  filtrate  at  about  1200  F.,  and  strain  while  warm  into  a  tared 
bottle  containing  the  glycerin,  then  make  up  the  quantity  to  100  parts 
with  water.    The  specific  gravity  of  this  syrup  is  1*272  at  700  F. 
For  the  purpose  of  this  experiment,  the  parts  used  were  grams  ;  the 
100  grams  of  syrup  measured  21  fluidrachms,  and  contained  77*161 
grains  of  ipecacuanha  ;  and  as  the  present  officinal  formula  contains 
375  grains  in  the  fluidrachm,  the  21  fluidrachms  obtained  by  the  above 
process  are  1*589  grains  short  of  the  officinal  quantity 
A  transparent,  and  possibly  permanent,  syrup  might  be  made  by  the 
above  method,  omitting  the  glycerin  and  adding  more  sugar  and  water ; 
but  the  use  of  glycerin  in  this  syrup  has  been  long  ago  recommended 
by  various  writers,  and  it  really  seems  to  possess  valuable  preservative 
properties,  without  being  in  the  least  degree  therapeutically  objection- 
able. 
AROMATIC  SULPHURIC  ACID. 
By  Phil.  Hoglan,  Ph.G. 
In  making  this  preparation  according  to  the  present  United  States 
Pharmacopoeia  process  I  invariably  get  a  precipitate  on  mixing  the 
tincture  of  the  aromatics  with  the  diluted  acid.  As  nearly  all  prepara- 
tions containing  cinnamon  are  apt  to  form  a  deposit  on  standing  for  a 
time,  I  concluded  that  the  precipitate  in  the  elixir  of  vitriol  was  owing, 
in  part  at  least,  to  the  presence  of  cinnamon,  and  on  a  suggestion  found 
in  a  recent  publication,  was  induced  to  substitute  the  oil  of  cinnamon 
for  the  powdered  bark,  directed  in  the  formula.  The  process  was  as 
follows : 
