388 
PHARMACEUTICAL  NOTICES. 
paper,  and  pouring  on  the  remainder  of  menstruum  in  the  propor- 
tion of  sixteen  fluidounces  for  every  sixteen  troyounces  of  drug. 
Cover  over  so  as  to  prevent  evaporation,  and  allow  to  macerate 
for  four  days  ;  after  that  time  remove  the  cork,  and  use  a  displac- 
ing liquid  of  either  strong  alcohol  or  dilute  alcohol,  or  water, 
corresponding  to  the  menstruum  employed,  (omitting  the  glyce- 
rin) by  pouring  it  over  the  surface  of  percolator  in  order  to  dis- 
place the  original  menstruum  ;  when  sixteen  fluidounces  for  every 
sixteen  troyounces  have  passed  through,  it  will  be  finished,  and 
will  be  found  to  be  perfectly  exhausted,  thereby  avoiding  heat, 
and  any  large  use  or  waste  of  alcohol.  I  find  that  it  requires 
about  an  eqaial  measure  of  the  displacing  liquid  to  displace  the 
first  or  original  liquid  through. 
The  difference  between  my  method  and  that  generally  em- 
ployed, consists  simply  in  adopting  a  uniform  grade  of  fineness 
of  powder  for  all  substances,  in  long  maceration  and  in  the  use  of 
glycerin.  The  officinal  method  is  to  reserve  the  first  three- 
fourths,  exhaust  and  evaporate  to  one-fourth  ;  in  my  method  I 
give  a  long  maceration  and  percolate  the  quantity  at  once, 
thereby  avoiding  reservation,  evaporation,  and  simplyfying  the 
process  very  much,  and  furnish  a  much  better  product. 
The  experiment  is  worth  a  trial,  and  I  feel  satisfied  that  if 
faithfully  followed  out  will  gratify  any  one  with  the  result,  and 
will  enable  him  to  dispense  reliable  fluid  extracts  fully  represent- 
ing the  crude  drug,  which  in  the  present  time  is  a  great  deside- 
ratum.— August  6,  1869. 
PHARMACEUTICAL  NOTICES. 
By  William  Procter,  Jr. 
The  following  formulae,  having  more  or  less  merit,  have  been 
used  in  Philadelphia,  and  are  offered  to  our  readers. 
Tinctura  Rhei  Dulcis. 
Take  of  Rhubarb,  coarsely  powdered,  eight  troyounces. 
Liquorice  root,     "  three  " 
Aniseed,  "  three  " 
Orange  peel,        "  one  " 
Cardamom  seed,  "  four  drachms. 
