76 
Abstracts  from  the  French  Journals. 
Am.  Jour.  Pharm- 
Feb.,  1893. 
ment  with  40  ccm.  and  then  with  20  ccm.  of  ether.  Mix  the  ether- 
eal solutions  and  then  pour  on  calcium  chloride,  and  filter  the  desic- 
cated ether,  to  which  the  washings  of  the  calcium  chloride  have 
been  added,  into  an  Erlenmayer  flask,  containing  5  ccm.  olive  oil,  and 
previously  weighed  after  drying  at  100°  C.  Then  distil  the  ether 
carefully,  avoiding  ebullition.  When  the  ether  has  nearly  all  dis- 
tilled over,  place  in  a  drying-oven  at  a  temperature  of  350  to  400,. 
and  aid  the  evaporation  by  drawing  a  current  of  air  through  the  flask 
for  five  minutes. 
When  the  odor  of  the  volatile  oil  has  entirely  displaced  that  of 
the  ether  in  the  residue,  make  several  weighings,  placing  the  flask 
into  the  drying  oven  for  3  or  4  minutes  before  each  weighing,  and 
displacing  the  vapors  by  drawing  in  air,  until  the  weighings  remain 
constant ;  subtract  this  weight  from  the  weight  of  the  flask  contain- 
ing the  olive  oil  previously  taken,  and  the  remainder  is  the  weight  of 
volatile  oil ;  this  it  is  only  necessary  to  multiply  by  5  to  have  the 
proportion  of  the  oil  per  litre  of  aromatic  water. 
The  following  table  shows  the  author's  results  working  by  this 
process : 
Belgian  Pharmacopoeia. 
Plants  employed  for 
the  distillation. 
u 
V  . 
p,<u 
G  ~ 
0 
Volatile  oil  con- 
tained  in  the 
litre. 
Average. 
Gra,  per 
litre. 
Volatile  oil  con- 
tained in  the 
litre. 
V 
> 
< 
Ceylon  Cinnamon,  . 
100 
1-308;  1-381  ;  1-327 
r338 
250 
1-725;  1-724;  1-740 
1-729 
Anthemis  
200 
0-42-- ;  0-438 
o"433 
250 
o'543;  o'52o 
0-536 
Rose,   .           .  .  .  • 
400 
0-1843;  °'i837;  o'i8S6 
0-1885 
1,000 
0-480;  0-473;  0-418 
°"457 
Cherrylaurel,  .... 
1-325;  1-345;  i"29° 
1-32 
Valerian,  ...     .  . 
100 
0-135;  o-i8o;  0-162 
o-i59 
250 
|    o-2o8;  0-244;  0-172 
0"20.S 
Elder,  
300 
0-153;  0-165 
o'i59 
250 
o-i8i;  0-197;  0  204 
0-194 
Apium  graveolens,  . 
100 
0-255;  0'260 
0-257 
Orange  Flowers,    .  . 
35o 
0-426;  0-432 
0-429 
500 
0-462;  0-487 
0-474 
Quadruple  Orange 
0-5605;  0-5975 
Flower  Water,    .  . 
l?  - 
,  1,000 
1 
o-579 
French  Codex. 
Decoction  of  Cinchona. — The  following  is  M.  Lambotte's  pro- 
cess : 
Make  a  decoction  of  I  kgm.  of  cinchona,  filter  at  a  temperature 
of  at  least  70  0  C,  evaporate  to  400  cc.  on  a  water-bath,  and  add  to 
the  cooled  liquid  100  cc.  alcohol,  which  dissolves  the  precipitate 
formed  during  the  evaporation;  now  make  up  the  volume  to  500  cc, 
by  the  addition  of  distilled  water.  This  liquid  represents  double  its 
weight  of  cinchona.    To  make  a  decoction  of  (say)  100  gm.,  5  cc.  of 
