462 
Oimic  i jug  a  Racemes  a . 
Am.  Jour.  Phaim. 
Sept.,  1884. 
drug  with  alcohol,  evaporating  and  pouring  the  concentrated  tincture 
into  water,  collecting  the  precipitate  washing  and  drying.  The  resin 
had  a  brownish-yellow  color,  was  without  odor,  but  had  a  slight  taste, 
was  soluble  in  alcohol,  ether  and  chloroform,  partly  soluble  in  cold  and 
hot  solutions  of  potassa,  and  insoluble  in  benzin,  hot  and  cold  water. 
After  treatment  with  animal  charcoal  the  resin  was  of  a  yellowish- 
green  color,  and  when  incinerated  left  a  grayish-white  ash. 
The  distillate  obtained  by  cohobation  from  26  pounds  of  the  fresh 
drug,  was  milky  and  had  the  odor  of  the  drug,  but  no  separation  of 
volatile  oil  occurred,  though  the  top  of  the  bottle  which  contained  the 
distillate,  appeared  greasy  when  the  water  was  shaken.  Portions  of 
this  distillate  were  then  agitated  with  ether,  chloroform  and  deodorized 
benzin,  and  set  aside.  After  twenty-four  hours  that  agitated  with 
benzin  had  a  whitish  snow-like  substance  floating  upon  the  top,  while 
that  which  had  been  agitated  with  chloroform  had  separated  the  sub- 
stance at  the  bottom  of  the  vessel,  and  no  similar  separation  was  ob- 
served in  the  portion  of  the  distillate  agitated  with  ether. 
The  floating  mass,  collected  from  the  distillate  agitated  with  benzin, 
appeared  like  minute  globules,  and  after  freeing  it  as  much  as  possible 
from  benzin  and  water,  and  evaporating  it  to  dryness,  the  residue 
weighed  *025  grams  and  was  a  fine  grayish- white  powder  without  odor 
or  taste,  soluble  in  alcohol,  slightly  soluble  in  benzin,  benzol  and 
stronger  ether,  insoluble  in  water. 
Ten  pounds  (avoir.)  of  the  fresh  drug  was  placed  in  an  hydraulic 
press  (power  4,000  pounds  to  the  square  inch).  From  this  pressure 
there  resulted  one  pint  and  a  half  of  dirty-brown  colored  liquid,  which 
after  filtering  was  blackish-brown,  and  on  evaporating  yielded  4*252 
grams  of  brownish-black  extract.  Treated  in  the  manner  stated  by 
T.  E.  Conard,  "Am.  Jour.  Phar.,  1871,  p.  152,"  the  crystalline 
substance  described  by  him,  was  obtained,  the  properties  of  which 
differed  in  the  following  particulars:  It  was  insoluble  in  hydrochloric 
acid,  but  soluble  in  sulphuric  and  dilute  sulphuric  acids.  Strong 
sulphuric  acid,  when  in  contact  with  it  for  a  little  time,  gave  it  a  brown 
color,  which  upon  the  addition  of  a  few  drops  of  solution  of  bichromate 
of  potassium  was  changed  to  a  permanent  yellow.  An  alcoholic  solu- 
tion was  neutral,  or  if  anything  slightly  alkaline  to  test  paper,  and 
when  concentrated  and  poured  into  water  gave  a  white  precipitate 
which  was  insoluble  in  the  alkalies.  The  fumes  from  the  substance 
when  fused  with  pure  potassa,  in  a  test  tube,  colored  red  litmus-paper 
