AmVp0rnr,'i879.rm  }  Gleaings  from  the  German  Journals. 
iqi 
Presence  of  Iron  in  Commercial  Sodium  Bicarbonate  — F. 
Schneider  states  that  liquor  sodae  chlorinatae  prepared  with  commer- 
cial sodium  bicarbonate  was  of  a  blueish-red  color,  caused  undoubtedly 
by  the  presence  of  iron  in  the  bicarbonate  ;  the  color  is  not  destroyed 
by  boiling. — Schweiz.  Wochenschr.,  1879,  p.  19. 
Presence  of  Copper  in  Ergotin.—  On  treating  a  warm  aqueous 
solution  of  ergotin  with  bright  iron,  W.  StefFen  proved  it  to  contain  a 
dangerous  quantity  of  copper.  The  contamination  was  probably 
caused  by  evaporating  the  ergotin  in  a  copper  dish. — Schw.  Wochenschr., 
1879,  p.  19. 
A  New  Hydrocarbon  from  Resin-Oil. — If  resin-oii  is  heated 
with  sulphur  to  about  200°C,  sulphuretted  hydrogen  and  carbonic 
oxysulphide  are  liberated  in  large  quantities.  If  the  temperature  is 
afterwards  raised  until  the  residue  boils,  a  substance  distills  over  which 
crystallizes  in  the  receiver,  and  may  be  purified  by  pressing  between 
bibulous  paper  and  recrystallization  from  alcohol.  It  forms  handsome, 
white,  brilliant  crystalline  plates,  resembling  mother  of  pearl  in  appear- 
ance, and  melting  at  94  to  95°C.  The  same  compound  is  also  formed 
by  the  action  of  pentachloride  of  phosphorus  on  resin-oil,  phosphoric 
oxychloride  being  formed.  It  cannot  be  distilled  without  undergoing 
decomposition,  but  yields  a  hydrocarbon  melting  at  86°C,  like  the 
former,  soluble  in  ether  and  alcohol.  The  latter  crystallizes  in  needles, 
and  consists  of  91*5  per  cent.  C  and  8*2  to  8*5  per  cent.  H. — Ber.  d. 
deutsch.  Chem.  Gesn  1878,  p.  2174. 
Lupinin,  a  New  Glucoside  found  in  Lupinus  luteus.— E.  Schulze 
and  J.  Barbieri  extracted  the  dry  plants  with  50  per  cent,  alcohol,  pre- 
cipitated the  tincture  with  solution  of  subacetate  of  lead,  decomposed 
the  voluminous  piecipitate  with  sulphuretted  hydrogen,  and  afterwards 
treated  it  with  much  warm  water.  On  cooling,  the  nitrate  deposited 
lupinin  as  a  yellowish-white,  fine,  crystalline  mass.  It  is  scarcely  solu- 
ble in  cold  and  hot  water  and  alcohol,  but  very  soluble  in  ammonia,  soda 
and  potassa,  yielding  dark  yellow  solutions,  from  which  acids  separate 
it  again  in  very  fine  yellowish  needles.  It  has  the  formula  C^H^O^, 
and  when  heated  with  diluted  mineral  acids  it  splits  into  sugar,  proba- 
bly dextrose,  and  an  insoluble  yellow  product,  lupigenin;  formula, 
C17Hw06. — Ber.  d.  deutsch,  Chem.  Ges.y  xi,  p.  2200. 
