212  CHEMICAL  RESEARCHES  ON  THE  MYRTLE  OF  AUSTRALIA. 
evaporated  in  a  warm  place  till  they  ceased  to  lose  weight.  The 
second  liquids  were  then  evaporated.  The  results  are  exhibited 
in  the  following  tabular  view  : 
Quantity  of  1st 
Per 
Cubebs 
Menstruum 
percolate  in 
Oleoresin 
Quantity  of 
Oleoresin 
Total  oleo- 
cent- 
treated. 
used. 
grain  measures. 
yielded. 
2d  percolate 
yielded. 
resin. 
age. 
1000  grs. 
Ether.- 
1000 
205 
1000 
14 
219 
21-9 
1000  grs. 
Alcohol. 
1000 
240 
1000 
30 
250 
25-0 
1000  grs. 
Benzine. 
1000 
140 
2000 
25 
170 
16-5 
The  products  by  alcohol  and  ether  were  both  cloudy,  froni  a 
portion  of  deposited  matter,  whilst  that  by  benzine  remained 
clear  and  free  from  deposit.  The  specific  gravity  of  these  pro- 
ducts varied ;  that  from  benzine  was  *9325,  that  by  ether  -9675, 
that  by  alcohol  *9850 ;  whilst  the  commercial  sample  alluded  to 
as  containing  ether,  was  only  -9000,  with  a  deposit  of  cubebin  in 
the  vial.  The  trials  were  at  the  temperature  of  76°  F.  To  de- 
termine whether  the  benzinic  dregs  contained  matter  soluble  in 
ether,  a  portion  of  the  latter  was  poured  on  the  dregs  until  the 
absorbed  benzine  was  displaced,  when  the  percolation  with  ether 
was  continued  until  1000  grains  had  passed.  It  had  a  green 
color,  and  on  evaporation  yielded  a  residue  of  28  grains,  con- 
sisting chiefly  of  cubebin,  with  a  little  waxy  matter  and  chloro- 
phyll, but  no  volatile  oil,  and  but  little  pungent  resin.  Cubebin 
appears  to  be  but  slightly  soluble  in  benzine,  and  until  it  be 
settled  that  it  has  no  medicinal  virtue,  it  will  not  do  to  employ 
benzine  as  a  solvent  in  making  oleoresin  of  cubebs. 
From  these  results  it  is  apparent  that  nearly  the  whole  of  the 
oleoresin  is  removed  in  the  first  percolate,  and  that  1000  grains 
measures  of  ether  in  the  second  only  produced  one-fourteenth 
as  much  of  oleoresin.  As  this  applies  equally  to  all,  it  points 
to  the  propriety  of  stopping  the  percolation  earlier,  and  sacrificing 
the  little  oleoresin  left  in  the  dregs. 
CHEMICAL  RESEARCHES  ON  THE  MYRTLE  OF  AUSTRA- 
LIA— E  U  GENIA  {JAMB  OS  A)  AUSTRALIS. 
By  MM.  De  Luca  and  Ubaldini. 
This  tree,  which  grows  admirably  in  the  open  air,  and  with  no 
care  for  culture,  in  the  Botanical  Garden  of  Naples,  attains 
the  height  of  about  forty  feet.     Its  straight  and  cylindrical 
