394 
ON  CIMICIFUGA  RACEMOSA. 
means  of  a  water  bath  to  a  sjrupj  consistence,  and  thrown  into 
water.  The  precipitated  resin  was  collected  on  a  filter,  and  when 
well  washed  and  dried  was  found  to  weigh  116  grains.  This, 
when  triturated  with  ether  until  it  was  no  longer  taken  up,  left 
57  grains  of  a  light  brown  resin  insoluble  in  ether.  This  was 
redissolvcd  in  alcohol ;  the  solution  agitated  with  animal  charcoal, 
until  it  became  colorless,  filtered,  and  allowed  to  evaporate 
spontaneously.  The  resin,  as  thus  obtained,  was  nearly  white, 
soluble  in  alkaline  solutions  from  which  it  was  precipitated  on 
the  addition  of  acids. 
The  ethereal  solution  was  agitated  with  animal  charcoal,  until 
it  became  colorless,  filtered,  and  by  spontaneous  evaporation, 
yielded  the  resin  having  a  slightly  greenish  tinge.  It  was  found 
to  be  soluble  in  alkaline  solutions,  from  which  it  was  precipitated 
on  the  addition  of  acids  ;  this  indicating  the  presence  of  a  resin 
soluble  in  ether. 
The  root  which  had  been  treated  in  the  former  experiment 
with  alcohol,  was  now  exhausted  by  percolation  with  ether.  The 
ethereal  solution  was  evaporated  to  a  small  bulk,  and  thrown  into 
water,  when  a  very  small  amount  of  a  fatty  matter  separated  and 
floated  on  the  surface  of  the  water.  It  was  absorbed  by  bibu- 
lous paper,  to  which  it  communicated  a  greasy  stain  which  was 
not  dissipated  by  heating  ;  this  indicating  the  presence  of  a  small 
amount  of  fatty  matter. 
During  the  evaporation  of  the  ethereal  solution,  a  small 
quantity  of  a  brown  waxy  matter  was  deposited  on  the  sides  of 
the  evaporating  dish. 
A  quantity  of  the  root  was  reduced  to  a  coarse  powder,  and 
macerated  with  sufficient  water  to  moisten  it,  for  24  hours, 
transferred  to  a  retort  and  distilled.  The  liquid  which  passed 
over  was  agitated  with  ether  ;  the  ethereal  solution  drawn  off  and 
allowed  to  evaporate  spontaneously.  By  its  evaporation,  a  very 
small  quantity  of  an  oily  liquid  was  obtained.  It  possessed  in 
a  marked  degree,  the  peculiar  odor  of  the  root,  and  communi- 
cated to  bibulous  paper  a  greasy  stain,  which  was  entirely 
dissipated  by  the  application  of  heat  ;  this  indicating  the  presence 
of  volatile  oil  in  small  amount. 
The  presence  of  green  and  brown  coloring  matters  was  proved 
by  the  action  of  animal  charcoal  on  the  two  resins. 
