542 
FORMULAE  FOR  THE  FLUID  EXTRACTS. 
EXTRACTUM  SENN^E  FLUIDUM. 
Take  of  Senna  in  powder,  No.  60,        sixteen  ounces,  Troy. 
Sugar,  eight  ounces,  Troy. 
Diluted  Alcohol,  a  sufficient  quantity. 
Moisten  the  senna  with  four  fluid  ounces  of  dilute  alcohol,  and 
pack  it  in  a  conical  percolator,  cover  it  with  a  disc  of  cloth,  and 
pour  on  diluted  alcohol  until  three  pints  have  slowly  passed. 
Reserve  the  first  pint,  and  in  a  warm  place  let  it  evaporate  to 
half  a  pint.  To  the  remaining  two  pints  of  tincture  add  the 
sugar,  and  in  a  water  bath  concentrate  the  solution  to  half  a  pint, 
and  mix  it  with  the  concentrated  tincture,  and  strain  if  neces- 
sary. When  it  is  desirable  to  aromatise  this  fluid  extract,  add 
16  minims  of  oil  of  cloves  dissolved  in  half  a  fluid  ounce  of  tinc- 
ture of  ginger  to  the  quantity  of  the  formula. 
Remarks  In  this  formula,  it  will  be  observed,  the  aromatics 
and  Hoffman's  Anodyne  are  omitted.  If  the  senna  is  passed 
through  a  sieve  50  or  60  meshes  to  the  inch,  and  a  funnel-shaped 
percolator  used,  the  first  pint  of  tincture  will  contain  most  of 
the  valuable  portion  of  the  senna,  and  by  the  precautions  sug- 
gested in  its  evaporation,  it  is  not  injured  by  the  process.  The 
reasons  for  omitting  the  aromatics  are  the  following.  1st.  The 
quality  of  the  preparation,  when  finished,  can  be  better  deter- 
mined by  its  odor  and  taste.  2d.  The  fluid  extract  can  be  em- 
ployed to  make  the  fluid  extracts  of  Senna  and  Spigelia  and 
Senna  and  Rhubarb  extemporaneously  when  desired.  3d.  The 
aromatics  can  be  added  when  required,  or  varied  to  suit  the  taste 
of  the  physician  or  patient.  4th.  The  proportion  of  alcohol 
retained  in  the  preparation  is  sufficient  to  keep  it  from  spoiling 
without  Hoffman's  Anodyne. 
EXTRACTUM  SPIGELLE  ET  SENN^J  FLUIDUM. 
Take  of  Pinkroot  in  powder,  No.  60,    ten  ounces,  Troy. 
Senna  in  powder,  No.  50,        six  ounces,  " 
Sugar,  ten  ounces.  " 
Carbonate  of  Potassa,  four  drachms. 
Oil  of  Caraway  and  Anise,      each  10  minims. 
Diluted  Alcohol,  a  sufficient  quantity. 
Mix  the  Pink  root  and  Senna  intimately  together,  moisten 
them  with  half  a  pint  of  diluted  alcohol,  pack  the  mixture  in  a 
