ON  IDENTITY  OF  PEUCEDANINE  WITH  IMPERATOIilNE.  165 
specific  gravity  was  0.862,  and  its  smell  closely  resembling  that 
of  cymene.  The  results  of  its  analysis  agree  exactly  with  the 
formula  C20  H16. 
Theory.  Found. 
C20  =120  -  -  -  88-24  -  -  -  88.14 
Hlfi=  16  11.76  -  -  -  11-68 
136        100.00  99.82 
The  portion  of  the  oil  which  dissolved  in  potash  lye  (the  eugen- 
ate  of  potash)  was  heated  for  a  considerable  time  with  agitation, 
in  order  to  drive  off  the  last  portions  of  the  hydrocarbon  which 
might  be  adhering  to  it. 
It  was  next  saturated  with  sulphuric  acid  and  the  liberated 
eugenic  acid  still  further  purified.  It  agreed  perfectly  in  its 
characters  with  those  ascribed  to  eugenic  acid  by  the  Chemists, 
Bonastre,  Ettling,  and  Boeckmann,  who  have  examined  eugenic 
acid.  Its  boiling  point  was  found  to  be  242°  O.,  and  its  specific 
gravity  1.076. 
The  results  of  its  analysis  agreed  very  closely  with  those  of 
former  experimenters. 
I.  0.3290  grms.  gave  0.8715  grms.  of  carbonic  acid,  and 
0.2135  grms.  of  water. 
II.  0.2645  grms.  gave  0.6895  grms.  of  carbonic  acid,  and 
0.1765  grms.  of  water. 
Theory.  Found. 
C24  =144  -  -  -  72.36  -  -  -  72.24  -  -  -  72.02 
H15==  15  7.54  -  -  -    7.21  7.41 
05  =  40  -  -  -  20.10    20.55    20.57 
199        100.00        100.00  100.00 
Lond.  Pharm.  Jour.  Jan.  1855. 
ON  THE  IDENTITY  OF  PEUCEDANINE  WITH  IMPERATORINE. 
By  R.  Wagner. 
The  author  prepared  imperatorine  according  to  Wackenrocjer's 
process,  by  the  extraction  of  the  root  of  Imperatoria  Ostruthium 
with  ether.  After  the  volatilization  of  the  ether,  the  imperator- 
ine separates.  It  is  rendered  purer  by  recrystallization  from 
ether  and  cold  alcohol,  in  which  the  fatty  oil  is  only  slightly 
