^'"'Ajr/'isS''™  }        Alkaloids  from  Remijia  Purdieana.  205 
tinochloride  has  the  complex  formula  (C22H26N204MeCl)2,PtCl4  + 
(C22H26N204MeHCl2),PtCl4  +  I4H2O ;  it  ciystalllzes  in  orange-colored 
needles,  and  is  insoluble  in  cold  water.  The  nitrate  forms  colorless 
satiny  plates.  The  hydroxide  formed  by  the  action  of  moist  silver 
oxide  on  the  chloride,  forms  an  amorphous  brown  mass  of  bitter  taste, 
readily  soluble  in  water,  insoluble  in  ether. 
Cliairamidme,  C22H26N2O4  -|-  H2O,  forms  an  amorphous  white  pow- 
der, melts  at  126  to  128°,  and  is  readily  soluble  in  ether,  alcohol,  ben- 
zene, and  chloroform,  insoluble  in  water.  Its  alcoholic  solution  shows 
the  rotary  power  [ajn  =  -1- 7*8°  at  p.  =  3  and  t.  —  15°.  It  dissolves 
in  concentrated  sulphuric  acid  with  yellowish  color,  which  later  turns 
dark  green.  The  platinochloride  ( 0201126^204)2, H2PtClg-|-5H20,  forms 
yellow  amorphous  flocks  insoluble  in  water.  The  normal  sulphate  and 
hydrochloride  are  gelatinous,  the  acetate  forms  a  slimy  mass. 
Conchairamidine,  O22H26N2O4  -f  HgO,  crystallizes  in  white  needles, 
melts  at  114  to  115°,  and  is  very  readily  soluble  in  ether,  chloroform, 
alcohol,  benzene,  and  acetone.  Its  solution  in  alcohol  (97  per  cent.) 
is  levorotary,  [«]j3=  —  60°  at  p.  =  3  (anhydrous)  and  t.  =  15°.  It 
dissolves  in  concentrated  sulphuric  acid  w^ith  an  intense  dark  green 
color.  With  chromic  and  sulphuric  acid  it  gives  a  solution  at  first 
brown,  then  dark  green.  The  hydrochloride,  €2^126^ 2^ i)^^^  +  SHgO, 
crystallizes  in  long  colorless  needles.  The  platinochlo7-ide,  (022ll26N2O4)2, 
HjPtOlg  -f  5H2O,  forms  a  yello\v  flocculent  precipitate.  The  normal 
sulphate,  (022H26N2O4),Il2SO4  -|-  I4II2O,  crystallizes  in  long  colorless 
needles,  sparingly  soluble  in  cold  water.  The  thiocyanate  is  amor- 
phous, readily  soluble  in  alcohol,  and  sparingly  soluble  in  cold  water. 
The  substance  described  under  the  name  of  concusconidine  in  the 
author's  earlier  communication  has  been  found  to  be  a  mixture  of 
alkaloids. — Jour.  Chem,  Soc,  Jan.,  1885,  p.  64;  from  Annalen  [225], 
211-262. 
Rhammis  Purshiana,  De  Candolle. — Limousin  believes  this  bark, 
cascara  sagrada,  to  contain  chrysophanic  acid,  and  derivatives  of  this 
compound,  which  cause  the  red  color,  on  the  addition  of  potassa  to  the 
resinous  principles  obtained  by  Professor  Prescott  (see Amer.  Jour. 
Phar.,''  1879,  p.  166),  and  induce  the  change  of  the  yellowish  color  of 
the  powdered  bark  when  kept  in  an  atmosphere  containing  ammoniacal 
vapors. — Jour.  Phar.  Chim.,  Jan.,  1885,  p.  80. 
