%en;  iP873RM'}  New  Anaesthetic  from  Ghlor.  of  Carb&n.  73 
pletely,  while  the  volatile  oils  evaporate  freely.  Should  a  larger 
quantity  of  volatile  oils  be  present,  the  residue  must  be  again  treated 
with  carbon  bisulphide  in  the  same  manner,  until  a  solid  residue  is 
left,  when  it  is  immediately  weighed.  In  the  presence  of  oil  of  lav- 
ender, and  particularly  of  rosemary,  the  camphor  is  obtained  in 
prisms. — Pharm.  Oentr.  Halle,  1872,  No.  50. 
Indelible  writing  ink  is  obtained  by  adding  to  ordinary  ink  some 
ferrocyanide  of  potassium.  The  use  of  acids  for  removing  the  ink, 
causes  the  formation  of  Prussian  blue. — Pharm.  Zeitung,  1872,  No. 
104. 
ON  A  NEW  ANAESTHETIC  OBTAINED  FROM  CHLORIDE  OP 
CARBON* 
By  JVJM.  Hardy  and  Dumontpalier. 
Chloride  of  carbon  unites  in  definite  proportions  with  alcohol,  and 
furnishes  a  liquid  which  boils  at  a  fixed  temperature,  and  possesses 
strong  anaesthetic  properties.  To  obtain  it,  30-8  parts  of  chloride  of 
carbon  are  mixed  with  4-6  parts  of  alcohol,  the  mixture  distilled,  and 
the  portion  collected  which  boils  at  66°  C. 
It  is  a  colorless,  transparent,  mobile  liquid,  of  an  agreeable  odor,, 
and  a  density  of  1-44  at  13°  C.  and  at  a  pressure  of  0-755.  Its 
boiling  point,  66°  C,  is  below  that  of  both  its  constituents,  chloride 
of  carbon  boiling  at  77°  and  alcohol  at  78*5°.  It  is  unalterable  in 
the  air,  volatilizes  slowly  and  burns  with  difficulty,  the  flame  having 
a  green  margin.  It  is  decomposed  by  water,  sulphuric  and  hydro- 
chloric acids,  chloride  of  carbon  being  deposited.  Aided  by  a  mode- 
rate heat,  nitric  acid  attacks  it  briskly,  with  the  disengagement  of 
red  fumes  and  the  separation  of  chloride  of  carbon,  while  the  super- 
natant liquid  yields  oxalic  acid. 
.  Analysis  leads  to  the  formula  2CC14,C2I160.  Its  density,  however, 
which  in  two  experiments  was  found  to  be  4*2  and  4*1,  does  not  cor- 
respond with  the  theoretical  density  required  by  this  formula.. 
Whether  it  be  regarded  as  a  compound,  or  as  a  mixture,  it  is  curious 
that  it  has  a  fixed  boiling  point,  and  all  the  physical  appearances  of  a 
body  of  definite  composition.  Other  analogous  cases  are  known 
which  have  not  yet  been  interpreted. 
It  acts  as  an  anaesthetic,  for  which  purpose  its  ethereal  odor  and 
*  Translated  from  Journal  de  Pharmacie  et  de  Chimie,  1872,  Dec, 
