78 
Eupatorium  Purpureum. 
(Am.  Jour.  Pharm. 
1        Feb.,  1890. 
charcoal,  melted  at  117-2°  C,  at  a  higher  temperature  they 
decomposed  and  burned  without  leaving  any  residue.  They 
were  found  to  be  insoluble  in  water,  sparingly  soluble  in 
petroleum  ether,  easily  soluble  in  ether,  chloroform,  benzol, 
carbon  di-sulphide  and  boiling  alcohol.  They  dissolved  in 
strong  aqueous  solutions  of  potassium  or  sodium  hydrate, 
but  separated  unchanged  on  the  addition  of  a  small  quantity 
of  water. 
They  were  not  affected  by  concentrated  hydrochloric  acid 
or  nitric  acid ;  cone,  sulphuric  acid  dissolved  them  with  a 
dark  red  color,  changing  to  bluish  green. 
The  crystals  from  Eli  Lilly  &  Co.,  after  purification  from 
hot  alcohol,  gave  the  following  when  submitted  to  elementary 
analysis : 
I,       "1982  gram  substance  gave  -5162  gram  C02  and  '0985  gram  H20 
II,       -2197         "            "          -5735       "       "        -1049  " 
1.  11. 
Per  Cent.  Per  Cent 
c,   71*03  7I'I7 
H,  5-52  5"30 
O,  23-45  23-53 
IOO'OO  IOOOO 
The  sample  from  J.  U.  Lloyd,  after  a  similar  purification, 
yielded  the  following: 
I,        2276  gram  substance  gave  '5915  gram  COa  and  -1104  gram  H20 
II,        -2132         "  "  -5526       "        "       -1053  " 
i.  11. 
Per  Cent.  Per  Cent. 
C,  70*88  70-69 
H,     .    .                                                                  5-39  5'48 
O,  2373  23-83 
100 -oo  IOO 'OO 
One  of  the  samples  was  then  taken  and  purified  by  animal 
charcoal,  which  yielded  a  product  so  much  brighter  in  color 
that  a  combustion  was  made  in  order  to  determine  if  a 
chemical  change  had  taken  place. 
The  following  results  show  that  no  material  difference 
occurred: 
I,       -2014  gram  substance  gave  '5241  gram  C02  and  "0930  gram  H20 
m,       -2143        "  "  -5596       "        "       '1004  " 
