462  Exhibition  of  Resin  of  Copaiba,  {^t^ml*^ 
M.  Fal  eres  is  of  opinion  that  no  serious  exception  could  be  takers 
to  the  change  of  fat  excipient  which  he  proposes.  The  progress, 
attained  in  the  manufacture  of  arachis  oil  has  provided  a  white,  bland^ 
tasteless  article,  which  is,  commercially  speaking,  neutral.  Perfum- 
ers, who  are  not,  like  pharmacist*,  bound  by  a  formal  code,  make 
large  use  of  the  ground  nut  oil  in  the  manufacture  of  pomades,  colck 
cream,  etc.  A  perfect  type  of  a  non-drying  oil,  it  absorbs  relatively* 
small  quantities  of  perfume  ;  it  requires  the  least  wax,  spermaceti,  or 
stearine  for  its  solidification,  and  finally  may  be  kept  almost  indefi- 
nitely without  turning  rancid.  The  author  promises  at  some  future^ 
time  to  show  in  detail  the  advantages  that  may  be  obtained  from  the 
use  of  nut  oil  in  a  large  number  of  pharmaceutical  preparations. — - 
Pharm.  Journ.  (Lond.),  June  28,  1873. 
NOTE  ON  THE  EXHIBITION  OF  RESIN  OF  COPAIBA. 
By  A.  W.  Gerrard, 
Dispenser,  and  Teacher  of  Pharmacy,  University  College  Hospital. 
The  above  resin  has  been  recently  introduced  to  the  notice  of  the> 
medical  profession  by  Dr.  Samuel  Wilks  as  possessing  therapeutic 
advantages  over  the  balsam,  and  likewise  as  being  more  agreeable 
for  the  patient  to  take.    In  a  letter  to  the  Lancet  of  June  the  21st? 
Dr.  Wilks,  in  reply  to  numerous  inquiries  that  had  been  made  as  to 
the  best  method  of  dispensing  it,  gave  the  following  formula,  whicfe 
had  been  recommended  by  me,  and  was  used  in  the  dispensary  of 
Guy's  Hospital  : 
Take  of — 
Resin  of  Copaiba,   ....        180  grains. 
Rectified  Spirit,         ....        5  drachms. 
Spirit  of  Chloroform,      ...  1  u 
Mucilage  of  Acacia,    ....       2  ounces. 
Water  to  1.2  " 
Mix  according  to  art. 
These  ingredients,  when  mixed  in  their  proper  order,  form  a  mix- 
ture which,  although  it  contains  the  resin  in  a  fine  state  of  division^ 
I  did  not  consider  altogether  satisfactory,  as  after  standing  a  day  or 
two  the  resin  collects  at  the  bottom  of  the  bottle,  forming  a  semi- 
compact  mass  which  is  shaken  apart  with  difficulty.  With  the  view 
of  overcoming  this  objection,  I  made  experiments  with  various  other 
substances  and  obtained  the  best  result  in  the  following: 
