400 
GLEANINGS  FROM  THE  FRENCH  JOURNALS. 
3.  All  the  useful  products  of  the  cinchonia  are  preserved,  the 
inert  only  being  rejected. 
4.  The  relative  proportion  of  quinia  and  cinchonia  adopted 
is  that  in  the  true  red  bark,  which  medical  experience  has  shown 
to  be  most  efficacious. 
5.  The  process  is  simplified  so  that  nothing  shall  be  lost,  and 
the  best  febrifuge  obtained  at  the  lowest  possible  price. 
The  following  formula  for  its  preparation,  that  of  M.  Labar- 
raque,  has  been  adopted  by  the  Academy. 
Alcoholic  Extract  of  Cinchona  by  Lime. 
Take  cinchonia  barks  of  which  the  composition  of -each  is 
known.  Mix  these  barks  in  such  proportion  that  the  quinine 
in  them  shall  be  to  the  cinchonia  as  two  to  one.  Grind  the  barks 
to  powder  and  mix  this  with  half  its  weight  of  hydrate  of  lime. 
Treat  this  mixture  with  boiling  alcohol  till  exhausted.  Regain 
the  greater  part  of  the  alcohol  by  distillation  and  evaporate  the 
residue  to  dryness.  This  dry  product  is  «  quinium,"  and  it 
should  yield  on  analysis  one  third  of  its  weight  of  the  mixed 
alkaloids.  The  dose  of  this  substance  is  15  centigrammes  (2 J 
grs.  Troy),  and  after  each  dose  drink  half  a  glass  of  wine.  M. 
Labarraque  recommends  a  "  wine  of  quinium"  to  be  made  by 
dissolving  4|  parts  of  quinium  in  100  parts  of  strong  white  wine. 
Repertoire  de  Pharm.,  June,  1858. 
Conia  in  Tooth-ache. — Dr.  Reid  states  that  conia  causes  in- 
stant relief  in  tooth-ache  arising  from  exposure  of  the  nerve  in 
caries ;  and  when  the  pain  returns  after  a  season,  it  again  re- 
lieves quickly.  It  is  applied  in  a  diluted  form  according  to  the 
following  formula : 
P  Conia  one  drop 
Rectified  alcohol, 
Essence  of  cinnamon,  each       .       four  drops. 
Mix. 
This  solution  is  applied  by  means  of  a  camel's  hair  pencil. 
The  action  of  the  conia,  besides  relieving  the  pain,  is  manifested 
several  minutes  after  its  first  application,  consisting  in  difficulty 
in  swallowing,  vertigo,  &c,  which  usually  ceases  in  about  ten 
minutes.  The  power  of  this  agent,  however,  should  be  applied 
with  caution,  as  its  action  may  become  excessive  with  want  of 
