166     BARK  OF  ATHEROSPERMA  MOSCHATUM,  MONIMIACE^l. 
The  residuary  liquid  in  the  still  was  filtered  and  precipitated 
by  acetate  of  lead  ;  this  tannate  of  lead  was  subjected  to  elemen- 
tary analysis,  and  yielded  results  corresponding  very  nearly 
with  the  formula  2PbO  C20  H14  04.  The  filtrate  from  this  pre- 
cipitate was  treated  with  ammonia,  the  precipitate  washed,  dried, 
digested  with  alcohol,  filtered,  evaporated,  treated  with  dilute 
hydrochloric  acid,  and  again  precipitated  by  ammonia.  This 
alkaloid  was  added  to  a  smaller  quantity,  obtained  from  the  re- 
siduary bark  by  treating  it  with  diluted  sulphuric  acid,  and  pre- 
cipitating and  purifying  as  before  ;  the  whole  was  then  purified 
by  dissolving  it  in  bisulphide  of  carbon,  and  after  removing  the 
same,  combining  it  with  muriatic  acid  and  precipitating  by  am- 
monia. 
Thus  prepared  it  is  a  white  powder,  with  a  greyish  tinge, 
light,  very  electrical,  inodorous  and  of  a  purely  bitter  taste; 
when  triturated  it  adheres  to  the  mortar  like  rosin.  It  remains 
unaltered  in  the  shade,  but  assumes  a  yellowish  color  in  the 
direct  sunlight.  Carefully  heated  in  a  test  tube,  it  emits  the 
odor  of  putrid  meat,  and  afterwards  gives  off  a  faint  odor  of  her- 
rings. It  fuses  at  128°  C.  (262°  F.)  is  nearly  insoluble  in 
water,  soluble  in  1000  parts  of  ether  spec.  grav.  -730  at  16°  C. 
in  100  p.  boiling  ether,  in  32  p.  cold,  and  2  p.  boiling  93  per  ct. 
alcohol ;  it  likewise  dissolves  in  chloroform,  bisulphide  of  carbon, 
oil  of  turpentine  and  other  volatile  and  fixed  oils. 
The  alkaloid  dissolves  in  and  neutralizes  dilute  acids  ;  concen- 
trated nitric  acid  produces  a  brown  yellow  color,  muriatic  and 
sulphuric  acid  merely  dissolve  it ;  in  the  latter  solution,  chromate 
of  jjpotassa  yields  slowly  a  green  color  of  chromic  oxide. 
The  yellowish  solution  in  chlorine  water  is  not  affected  by  am- 
monia.    From  iodic  acid,  the  alkaloid  liberates  iodine. 
The  neutral  solution  of  the  hydrochlorate  shows  the  following 
behaviour  to  reagents:  ammonia,  potassa,  limewater  and  alka- 
line carbonates  a  white  precipitate  insoluble  in  excess  ;  nitropi- 
cric  acid  lemon  yellow  ;  tannin  a  yellowish  white  turbidity  ;  iodide 
of  potassium  white,  and  in  presence  of  free  iodine  brownish  yel- 
low ;  ferrocyanide  of  potassium  white ;  ferridcyanide  sulphur 
yellow  ;  sulphocyanide  white  flocculent  ;  phospho-molybdic  acid, 
dirty  yellow  ;  terchloride  of  gold  ochre  yellow  ;  bichloride  of  mer- 
cury white,  soluble  in  water ;  bichloride  of  platinum  pale  greyish 
