528 
PHARMACY  OF  THE  CINCHONAS. 
meshes  to  the  linear  inch,  rejecting  a  small  ligneous  residue 
which  is  difficult  to  reduce  to  powder. 
This  makes  a  very  elegant  and  very  efficient  powder,  though 
not  quite  so  nice  as  when  all  the  aromatics  of  carefully-selected 
quality  are  powdered  together  in  quantity  in  an  ordinary  Chaser 
mill. 
The  above  formula  of  3,080  grains  in  all,  yields  to  ordinary 
management  2,840  grains,  and  15  to  20  grains  of  ligneous 
residue,  and  the  cost  of  the  materials  for  this  6J  av.  ounces  of 
finished  powder  is  about  74  cents,  or  $1.82  per  pound,  avoir- 
dupois, exclusive  of  time,  labor,  skill,  apparatus,  etc.,  and 
profit.  If  the  time,  labor,  etc.,  be  estimated  at  12  cents  per 
pound,  making  §1.94,  and  the  profit  on  this,  say  20  per  cent., 
the  lowest  probable  price  for  good  Aromatic  Powder  could  not 
be  less  than  $2.33  per  pound  in  first  hands,  yet  it  is  not  uncom- 
monly sold  at  about  $2.00  per  pound. 
The  medicinal  value  and  uses  of  good  Aromatic  Powder  are 
such  as  perhaps  to  warrant  the  introduction  into  the  Pharmaco- 
poeia of  a  fluid  extract  prepared  from  it.  A  fluid  extract  of 
aromatics,  proposed  by  Prof.  Procter,  of  Philadelphia,  in  1859; 
has  been  in  advantageous  use,  but  the  aromatics  are  different, 
are  in  different  proportions,  and  perhaps  not  so  well  adapted  to 
general  uses  as  those  of  the  Pharmacopoeia.  For  the  Cinchona 
preparations,  and  for  many  other  uses,  the  following  formula  is 
suggested : — 
Extractum  Aromaticus  Fluidum — Aromatic  Fluid  Extract. 
Take  of  Aromatic  Powder,  twenty-four  troyounces. 
Alcohol, 
Water,  each  a  sufficient  quantity. 
Divide  the  Aromatic  Powder  into  three  equal  parts,  moisten 
the  first  part  with  four  fluidounces  of  Alcohol,  pack  it  firmly  in 
a  funnel  prepared  for  percolation,  and  pour  on  top,  first,  a  pint 
of  Alcohol,  and,  after  this  has  disappeared,  twelve  fluidounces 
of  water.  Percolate  to  sixteen  fluidounces,  keeping  each  four 
fluidounces  separate  as  it  passes  through.  Then  moisten  the 
second  part  of  the  powder  with  the  first  four  fluidounces  of 
percolate  from  the  first  part,  pack  it  firmly  in  a  funnel  pre- 
