532 
FORMULA  FOR  THE  FLUID  EXTRACTS. 
choice  to  be  made  by  the  framers  of  that  codex,  assuming  the 
processes  to  yield  satisfactory  products. 
Class  First, 
EXTRACTUM  ACONITI  FOLIORUM  FLUIDUM. 
Take  of  Aconite  leaves  in  powder  (No.  60*)  16  ounces  Troy, 
Alcohol, 
Water,  of  each  a  sufficient  quantity. 
Mix  two  pints  of  alcohol  with  one  of  water,  moisten  the 
powder  evenly  with  four  fluid  ounces  of  the  mixture,  pack  it 
firmly  in  a  percolator,  and  having  covered  the  surface  with  a 
disc  of  clothf  gradually  pour  on  the  same  menstruum  until 
three  pints  have  passed ;  reserve  the  first  twelve  fluid  ounces, 
evaporate  the  remainder  at  150°  F.  on  a  water  bath  to  four 
fluid  ounces,  mix  it  with  the  reserved  tincture,  and  after  stand- 
ing twenty  four  hours  filter  through  paper. 
In  the  same  manner  prepare 
EXTRACTUM  BELLADONNA  FLUIDUM. 
From  Belladonna  leaves,  in  powder. 
EXTRACTUM  BUCHU  FLUIDUM. 
From  Buchu,  in  powder.    No,  40. 
EXTRACTUM  DIGITALIS  FLUIDUM. 
From  Digitalis,  in  powder. 
EXTRACTUM  HYOSCYAMI  FLUIDUM. 
From  Henbane  leaves,  in  powder. 
EXTRACTUM  MATICO  FLUIDUM. 
From  Matico,  in  powder. 
EXTRACTUM  STRAMONII  FLUIDUM. 
From  Thorn  Apple  leaves  in  Powder. 
EXTRACTUM  VALERIANA  FLUIDUM. 
From  Valerian  in  powder. 
*  "  No.  60''  indicates  that  the  sieve  through  which  the  powder  is  passed, 
has  60  meshes  to  the  linear  inch — and  so  of  other  numbers. 
-|-By  this  is  intended  a  circular  piece  of  muslin,  linen  or  lint,  or  any  in- 
soluble porous  tissue  to  prevent  the  disturbance  of  the  powder.  Filtering 
paper  perforated  with  holes  will  do,  but  the  disc  of  cotton  cloth  is  cheap 
and  to  be  preferred.  The  pieces  need  not  be  thrown  away,  but  may  again 
be  used  after  washing. 
