Amvilv,ri909arm}  Syrups.  317 
first  placed  in  this  bottle  it  is  obvious  that  but  300  c.c.  of  percolate 
would  be  obtained  and  this  is  not  sufficient  to  extract  the  drug. 
Syrupus  Rhei  U.S. P. — There  is  no  need  for  the  use  of  the 
fluidextract  of  rhubarb  in  this  formula,  as  a  syrup  can  very  readily 
be  prepared  from  the  drug.  The  following  formula  is  entirely 
satisfactory : 
Rhubarb  (No.  20  powder)   100  Gms. 
Potassium  carbonate    10  Gms. 
Glycerin   50  c.c. 
Sugar    800  Gms. 
Cinnamon  water,  a  sufficient  quantity. 
Mix  the  rhubarb  4  with  250  grammes  of  clean  sand  and  moisten 
with  50  c.c.  of  a  mixture  of  the  glycerin  and  150  c.c.  of  cinnamon 
Avater,  transfer  to  a  percolator,  and  extract  using  the  remainder  of 
the  menstruum  and  then  cinnamon  water  till  6oo  c.c.  of  percolate 
is  obtained.  To  this  add  the  potassium  carbonate  and  then  the 
sugar,  using  a  water-bath  heat  to  dissolve,  and  strain  and  add  cin- 
namon water,  if  necessary,  to  obtain  1000  c.c.  of  product. 
Syrupus  Ros.e  U.S. P. — In  this  formula  10  c.c.  of  diluted  sul- 
phuric acid  is  added  to  the  fluidextract  in  order  to  fix  the  color.  In 
most  of  the  samples  of  fluidextract  of  rose,  U.S. P.,  that  we  have  seen 
the  color  is  decidedly  off  and  obviously  for  this  purpose  the  acid 
should  be  added  to  the  menstruum  in  the  preparation  of  the  fluid- 
extract.  The  following  is  submitted  as  a  rational  process  for  direct 
preparation  of  syrup  of  rose : 
Rose  leaves  in  fine  powder   125  Gms. 
Diluted  sulphuric  acid   10  c.c. 
Glycerin    100  c.c. 
Sugar    800  Gms. 
Water,  a  sufficient  quantity. 
Mix  the  powdered  rose  leaves  with  500  Gms.  clean  pure  sand  5 
and  moisten  this  with  sufficient  of  the  menstruum  composed  of  the 
diluted  sulphuric  acid  and  glycerin  and  500  c.c.  of  water,  pack 
lightly  in  a  percolator,  macerate  for  one  hour,  and  then  continue  the 
4  It  is  not  advisable  to  use  finer  powdered  rhubarb  than  Xo.  20  or  a 
much  larger  amount  of  sand  will  be  necessary. 
5  For  these  experiments  cleanest  commercial  sand  obtainable  was  boiled 
with  diluted  hydrochloric  acid  and  then  washed  with  water  till  no  precipitate 
with  silver  nitrate  T.S.  was  obtained. 
