GLEANINGS  FROM  THE  FRENCH  JOURNALS.  511 
with  the  other  substances  a  consistent  mass  and  divide  it  into 
ten  cones. 
In  the  same  way  prepare  Cones  of  Belladonna  and  Digitalis. 
Cones  of  Tar. 
Take  of  Purified  tar  450  grains, 
Powdered  marshmallow  525  " 
Saltpetre  525  « 
Mix  and  divide  into  ten  cones. 
In  the  same  way  prepare  Cones  of  Tolu. 
Cones  of  Opium. 
Take  of  Marshmallow  powder, 
Saltpetre  in  powder,  each  ten  drachms, 
Opium,  powdered  39  grains, 
Water  q.  s. 
Mix  and  make  ten  cones. 
Cones  of  Camphor. 
Take  of  Powdered  camphor  450  grains, 
Powdered  saltpetre  450  " 
Powdered  marshmallow  750  " 
Water  q.  s.  • 
For  ten  cones. 
Besides  these  cones  of  sugar,  poplar  buds,  benzoin  and  of 
oxide  of  zinc  are  recommended. 
All  these  cones  after  preparation  should  be  dried  in  a  stove 
and  preserved  in  a  dry  place. — Jour,  de  Chim.  Med. 
Preparation  of  Mercurial  Ointment. — Eugene  Renoult  re- 
commends the  following  method  {Jour,  de  Chim. Med.)  for  pre- 
paring quickly  this  ointment : — 
Take  of  Lard  and  mercury,  of  each       16  ounce?, 
Ether  an  ounce. 
Into  a  mortar  of  marble  or  iron  put  the  mercury  with  one  half 
the  lard,  and  half  the  ether,  and  triturate  quickly.  Under  the 
influence  of  cold  produced  by  the  vaporization  of  ether,  the 
mercury  is  divided  into  minute  droplets  and  is  promptly  ab- 
sorbed. The  other  part  of  the  ether  and  lard  are  then  added, 
and  the  trituration  continued  until  the  mercury  is  completely 
extinguished.    The  ointment  is  left  in  contact  with  the  air  for 
33 
