EXTRA CTUM    CINCIIONiE  FLUIDUM. 
411 
The  Business  Committee  then  brought  forward  the  following 
Resolutions,  viz  : 
Resolved,  That  the  Secretary  be  directed  to  address  a  vote  of  thanks 
from  the  Association  to  the  Judges  of  the  Supreme  Court,  for  the  use 
of  this  room,  which  has  been  occupied  by  the  Association  only  through 
their  courtesy  and  liberality. 
Unanimously  passed. 
Resolved,  That  the  thanks  of  the  Association  are  eminently  due,  and 
are  hereby  heartily  tendered  to  the  druggists  and  pharmaceutists  of 
Detroit,  for  their  judicious  and  liberal  care  of  the  Association,  and  for 
their  kind  and  considerate  hospitality  to  the  members  and  their  families 
during  their  visit  to  Detroit. 
This  resolution  was  adopted  with  emphasis  by  the  visiting 
members,  whose  sense  of  its  truthfulness  gave  force  to  their 
expression. 
A  resolution  was  then  moved  and  adopted  unanimously, 
thanking  the  corps  of  reporters  for  the  daily  papers,  for  their 
assiduous  attention  and  efficient  reports  of  the  sessions. 
The  minutes  of  the  day's  sessions  were  then  read  and  affirmed, 
and  the  Association  adjourned  finally,  to  meet  in  New  York  on 
the  second  Tuesday  of  September,  1867. 
"EXTRACTUM  CINCHONA  FLUIDUM." 
By  John  T.  Walker. 
The  officinal  fluid  extract  of  Cinchona  being  a  turbid  prepara- 
tion, not  capable  of  holding  the  cincho-tannates  in  solution  with- 
out occasional  agitation,  I  tried  a  new  process  with  apparent  suc- 
cess. In  making  a  pint  of  fluid  extract  the  following  method 
was  adopted  :  Eight  troyounces  of  the  bark  in  moderately  fine 
.  powder  were  taken,  and  subjected  to  percolation.  The  first 
twelve  fluidounces  were  reserved,  and  percolation  continued  until 
the  bark  was  thoroughly  exhausted ;  the  menstruum  being  dilu- 
ted alcohol. 
The  liquid  last  displaced  was  mixed  with  six  fluidounces  of  syrup 
and  four  fluidounces  of  pure  Glycerin,  and  evaporated  to  about 
twelve  fluidounces.  The  reserved  portion  was  then  added  and 
the  whole  reduced  to  sixteen  fluidounces.  No  straining  was 
necessary,  as  the  fluid  extract  was  perfectly  clear  and  of  a 
beautiful  red  color.  John  T.  Walker. 
Philadelphia,  Aug.,  1866. 
