180  Distinction  of  the  Cinchona  Alkaloids.  {Amxfc£7h8a.rnfc 
phate.  The  above  minute  globules  were  also  obtained  with  valerianate 
and  acetate  of  quinia,  and  in  one  case  spike-like  crystals  appeared,  which 
were  due  to  an  admixture  of  cinchonidia  salt. 
Fig.  5.  Cinchonidia  sulphate  with  KScy.     Fig.  6.  Cinchonidia  sulphate  with  KScy. 
2.  ^uinidia  Sulphate. —  Crystals  are  at  once  observed  united  into 
striking  groups  (Fig.  3).  They  are  of  a  brownish-yellow  color  in  trans- 
mitted light,  and  in  general  resemble  Schrage's  quinidia  crystals. 
3.  Cinchonia  Sulphate. — Long  radiating  crystals,  mostly  considerably- 
branched  (Fig.  4),  and  resembling  antlers  or  equisetum.  They  agree 
with  one  of  Schrage's  pictures,  and  with  the  other  only  in  the  presence 
of  cinchonidia. 
Fig.  7.  Cinchonidia  sulphate  with  KScy.      Fig.  8.  Cinchonidia  sulphate  with  KScy- 
4.  Cinchonidia  Sulphate. — The  crystals,  which  appear  at  once,  form 
either  dense  tufts  stellately  arranged  around  a  central  point  (Figs.  5  and 
6),  or  uneven,  thin  spike-like  crystals,  which  are  united  into  star-like 
(Fig.  7)  or  fan-shaped  (Fig.  8)  groups. 
