420 
ON  BETACINCHONIA. 
added  to  the  sulphate,  produce  a  red  color  turning  green  on  the 
addition  of  ammonia. 
Cyanide  of  potassium  yields  instantly  a  white  precipitate. 
Salts  Betacinchonia  forms  with  acids  only  neutral  salts, 
"which  crystallize  even  from  an  acid  solution. 
Hydrochlorate  of  betacinchonia  C^q  N2  Og,  HCl  +  4H0 
crystallizes  in  small  four-sided  prisms,  dissolves  in  22  parts  cold 
and  3.2  parts  hot  water,  in  1  part  cold  and  one-fifth  part  hot 
alcohol,  and  in  560  parts  ether.  Its  double  salt  with  bichloride 
of  mercury  =  C^q  B.^^  0^,  HCl  +  Hg  CI2  is  white  and  resin- 
ous. The  double  salt  with  bichloride  of  platinum  =  C^^ 
N2  O2,  2HC1  +  2Pt  Clg  crystallizes  in  anhydrous  hexagonal 
prisms,  pretty  soluble  in  water,  nearly  insoluble  in  alcohol. 
Hydriodate  of  betacinchonia  C^^  N2  O2,  HI  +  aq.  small 
soluble  crystals. 
Hydrocyanate  C^^  H24  N2  0^,  HCy  amorphous,  insoluble  in 
water  and  alkalies. 
Hydrosulphocyanate :  long  thin  crystals,  efflorescing  in  dry 
air. 
Sulphate  C^o  ^24  ^2  O2,  SO3  +  2H0 :  four-sided  prisms, 
soluble  in  75  parts  cold  and  14  hot  water,  in  13.6  parts  cold 
and  1|  parts  hot  80  per  cent,  alcohol,  and  insoluble  in  98  per 
cent,  alcohol  and  ether.  The  solution,  much  diluted,  is  very 
refractive. 
lodosulphate  is  analogous  to  herapathite. 
Nitrate  C^^  B.^  'N^  O2,  NO5  +  HO  separates  on  spontaneous 
evaporation  in  oily  drops,  forming  in  four  or  six  weeks  colorless 
crystals,  1  to  1|  inches  in  length;  they  are  not  efflorescent, 
and  dissolve  in  water  and  alcohol. 
Phosphate :  well  formed  efflorescent  crystals,  readily  soluble 
in  alcohol,  less  in  water. 
Acetate :  four-sided  prisms,  easily  soluble  in  water  and  alco- 
hol, and  not  efflorescent. 
Tartrate :  transparent  crystals,  becoming  opaque,  very  soluble 
in  water. 
Oxalate  is  obtained  like  the  nitrate,  and  crystallizes  in  very 
efflorescent  radiating  bundles. 
The  crystalline  form,  solubility  and  other  properties  of  the 
new  alkaloid  and  many  of  its  salts  are  in  the  original  compared 
