934 
Current  Literature. 
Am.  Jour.  Pharm. 
December,  1920. 
tracted  with  200  Cc.  of  ether  to  which  a  few  Cc.  of  chloroform  have 
been  added.  The  ether  is  removed  by  distillation,  and  the  residue 
— emetine — ■  is  treated  with  solution  of  caustic  soda,  which  dissolves 
the  cephaeline  and  psychotrine;  the  pure  emetine  is  extracted  by 
means  of  ether,  and  the  hydrochloride  is  formed  by  the  action  of 
4  per  cent,  hydrochloric  acid  on  the  pure  alkaloid.  (From  The 
Chemist  and  Druggist,  October  2,  1920.) 
"Crksinkol,"  a  Compound  of  Cinkol  and  o-Cresoi..— Cineol 
and  oil  of  eucalyptus  form  a  crystalline  mass  with  c-cresol;  no  crys- 
tals are  formed  with  m-  or  ^-cresol.  Molecular  amounts  of  cineol 
at  lab.  temp,  and  o-cresol  at  50  are  mixed,  when  heat  is  developed, 
and,  on  cooling,  white  crystals  appear,  M.  P.  55.2,  B.  P.  186. 5-189. 
Soluble  in  ether,  alcohol,  chloroform,  benzene,  petroleum  ether. 
Forms  a  colorless  liquid  with  an  equal  weight  of  camphor.  Does 
not  appear  to  possess  a  caustic  action  on  the  skin.  (S.  Waldbott  in 
Chem.  Ahs.,  14:  2967;  T.  T.  Cocking,  Chem.  and  Drug.,  93: 
1032,  1920.)  J.  F.  C. 
Xanthorrhoea  Resins. — Rennie,  Cooke,  and  Findlayson  report 
the  following  constituents  found  in  an  incomplete  examination  of 
three  xanthorrhoea  resins  from  Australia.  All  three  contained  ^-cou- 
maric  acid,  either  free  or  as  an  ester,  and  p -hydroxy benz aldehyde. 
Steam  distillation  yielded  the  following  substances  not  hitherto 
found  in  xanthorrhoea  resins : 
A.  — A  red  resin  from  Kangaroo  Island,  species  unknown,  gave 
a  small  quantity  of  a  liquid  with  an  odor  of  vanillin;  paeonol  (2- 
hydroxy-4-methoxyacetophenone) ;  and  traces  of  a  higher  boiling 
substance. 
B.  — Yellow  resin  from  X.  Tateana  (Kangaroo  Island)  gave  a 
small  quantity  of  unidentified  fragrant  liquid  of  vanillin  odor; 
paeonol ;  hydroxypaeonol ;  and  a  small  quantity  of  *higher  boiling 
constituent. 
C.  — ^Red  resin  from  X.  Preissii  (W.  Australia)  gave  a  small 
quantity  of  unidentified  fragrant  liquid;  i -citronellol ;  paronol; 
paeonol;  hydroxypaeonol;  a  compound,  possibly  oxydiphenyl  ether; 
a  small  quantity  of  a  high  boiling  constituent.    {J.  Chem.  Soc.,  117: 
Demonstration  of  Hemin  Crystals. — Strassmann  describes 
a  modification  of  the  Teichmann  test  for  the  demonstration  of  hemin 
crystals  in  blood.    Particles  from  the  suspected  blood  stain  are  mixed 
338-50,  1920.) 
J.  F.  C. 
