ABju,°°,r-.8P79arm'}  Smilax  Glauca.  29^ 
gen,  in  order  to  free  it  from  lead,  and  again  filtered.  The  sulphide  of 
lead,  after  thorough  washing  with  water,  was  treated  with  boiling  alco- 
hol, filtered,  the  filtrate  concentrated  and  spread  on  glass  to  scale  j, 
attempts  were  made  at  crystallization,  but  without  success. 
The  precipitate  with  acetate  of  lead  was  thoroughly  washed,  sus- 
pended in  water  and  decomposed  by  sulphuretted  hydrogen,  then 
filtered.  The  liquid  was  now  evaporated  ;  at  first  the  color  was  dark- 
red,  and  the  color  of  blue  litmus  was  changed  to  red.  Both  characters 
became  greatly  augmented  as  the  process  of  evaporation  went  on.  A 
small  quantity  diluted  with  water  gave  the  following  reactions  :  With 
alkalis,  the  color  was  deepened  ;  with  ferric  chloride,  a  greenish-black 
color  ;  with  Mayer's  test,  a  yellowish  color  ;  with  subacetate  of  lead* 
gelatinous  precipitate  ;  with  soulution  of  gelatin,  gelatinous  precipitate. 
These  reactions  showed  the  presence  of  tannin.  After  concentration 
to  a  small  bulk,  and  setting  aside  for  a  few  days,  crystals  of  what 
appeared  to  be  a  magnesium  compound  were  deposited.  The  filtrate 
from  these  crystals  was  now  treated  with  twice  its  bulk  of  alcohol* 
filtered,  and  then  found  to  be  free  from  tartaric,  citric  and  malic  acids. 
After  having  been  treated  with  ammonia  and  solution  of  alum,  no  pre- 
cipitate was  obtained  with  salts  of  iron,  calcium,  mercury  and  copper* 
but  lead  acetate  occasioned  a  white  precipitate. 
The  sulphide  of  lead  remaining  after  the  decomposition  of  the  lead 
precipitate  by  H2S  was  thoroughly  washed  and  treated  with  boiling 
alcohol,  filtered  and  allowed  to  evaporate  spontaneously,  then  spread 
on  glass  to  scale.  The  product  was  of  a  beautiful  red  color,  perfectly 
transparent,  taste  slightly  bitter,  wholly  soluble  in  alcohol  and  partially 
so  in  water,  but  insoluble  in  ether  and  chloroform.  Ammonia  dis- 
solved it,  deepening  the  color,  and  on  the  addition  of  an  acid  the  color 
was  discharged.  A  small  quantity  dissolved  in  water  with  the  aid  of 
alcohol,  and  agitated,  produced  copious  foaming,  and  was  precipitated 
by  acetate  of  lead.  On  digesting  with  water,  a  portion  was  dissolved,, 
and  on  being  evaporated  was  left  behind  as  a  red  transparent  mass  ;  the 
portion  insoluble  in  water  dissolved  in  alcohol,  and  after  evaporation 
left  a  brown  transparent  mass,  both  portions  foaming  on  being  agitated 
with  water. 
The  filtrate,  after  precipitation  by  acetate  of  lead,  left,  on  evapora- 
tion, an  amorphous  dark  red-brown  mass,  with  a  tint  of  green,  and 
perfectly  transparent ;  the  taste  is  very  bitter  and  slightly  acrid.    It  is 
