AmDec.?i89oarm'}  Solarium  Carolinense.  603 
Caustic  soda  extract : 
Albuminoids,  ■  .  5*145 
Not  precipitated  by  alcohol,  4/160 
  9"305 
Hydrochloric  acid  extract : 
Oxalate  of  lime,  1*205 
Starch,  6  150 
  7*355 
Incrusting matter,  cellulose,  etc.,  53 "450 
Moisture,  8*590 
Ash  including  sand,   io'Soo 
Loss,  0*300 
 IOO'OOO 
From  the  analysis  it  will  be  observed  that  but  little  is  extracted 
by  petroleum  ether,  ether  and  alcohol,  and  that  the  root  bark  con- 
tains comparatively  large  amounts  of  albuminoids  and  starch. 
The  ash  contained  besides  calcium,  potassium,  iron  and  sulphuric 
acid,  a  large  amount  of  sand,  which  must  have  adhered  to  the  root, 
notwithstanding  its  careful  treatment. 
The  total  alkaloids  amounted  to  about  0-4  per  cent.  The  alka- 
loids extracted  by  petroleum  ether  and  ether  differed  in  some  reac- 
tions from  the  one  dissolved  by  alcohol.  The  separate  alkaloidal 
extractions  behaved  identically  with  the  following  reagents : 
Mayer's  solution  gave  a  white  flocculent  precipitate ;  mercuric 
chloride  gave  a  white  flocculent  precipitate  ;  iodine  gave  a  brown 
precipitate ;  chloride  of  gold  gave  a  yellow  precipitate,  with  gradual 
reduction  of  metallic  gold. 
The  alkaloids  were  crystallizable  and  dissolved  in  dilute  acids, 
from  which  ammonia  precipitates  them  again. 
Sulphuric  acid  spec.  grav.  I  84,  produces  a  fine  red  color. 
Heated  on  platinum  they  emitted  an  odor  of  burning  hair,  leaving 
no  residue. 
The  alkaloids  differed  as  follows  : 
(a)  The  alkaloids  extracted  by  petroleum  ether  and  ether  did 
not  reduce  Fehling's  solution,  even  after  having  been  boiled  with 
dilute  acids.  They  were  soluble  in  benzol  and  chloroform.  They 
crystallized  in  hard  shining  prisms  and  their  solutions  did  not 
gelatinize.  The  precipitate  with  Mayer's  solution  was  wholly  dis- 
solved by  ether,  which  on  evaporation  left  a  residue  of  crystals  of 
inch  length.  These  crystals  were  dissolved  in  alcohol,  H2S 
passed  through  the  solution,  HgS  removed  by  nitration,  and  the 
