GLEANINGS  FROM  THE  GERMAN  JOURNALS.  217 
Poisoning  hy  cyanide  of  potassium. — F.  Venghauss  obtained 
from  the  blood  of  a  man  who  had  died  from  accidentally  drink- 
ing a  solution  of  cyanide  of  potassium,  free  hydrocyanic  acid, 
but  found  none  therein  in  combination.  The  stomach  was  free 
from  the  free  acid,  a  mixture  of  protosulphate  and  sesquichlo- 
ride  of  iron  having  been  given  as  an  antidote,  too  late,  however, 
to  save  life.— (Arch.  d.  Ph.  clii.  138,142.) 
Hydrocyanic  acid  from  Primus  padus. — Dr.  0.  Geiseler  dis- 
tilled from  the  fresh  Co'.vers,  an  equal  weight  of  water  and 
collected  the  distillate  in  4  equal  portions  ;  1  ounce  of  the  first 
contained      of  the  second  -1,  of  the  third       of  the  fourth 
17  '  23  '  46  ' 
L  and  of  the  mixture  L.  grain  of  dry  HCy.  The  leaves  collect-' 
ed  in  July  yielded  a  distillate  containing  \  gr.  HCy  in  the 
ounce.— (Arch.  d.  Ph.  clii.  143,  47.) 
Beoxidation  by  protosalts  of  iron. — C.  W.  Hempel  found,  that 
protosalts  of  iron  in  connection  with  caustic  alkalies  reduce 
bichloride  of  platinum  and  of  mercury  to  platinum  black  and 
to  calomel,  which  remain  behind  after  the  subsequent  treatment 
with  muriatic  acid.  Iodic  acid  is  reduced  under  the  same  cir- 
cumstances, but  the  liberated  iodine  reacts  with  the  excess  of 
soda,  forming  iodate  of  soda  and  iodide  of  sodium,  from  which, 
by  the  addition  of  sulphuric  acid,  all  the  iodine  is  set  free. — 
(Ann.  d.  Chem.  u.  Ph.  xxxi.  97,  98.) 
Ferridcyanide  of  potassium  is  obtained  according  to  F.  Rein- 
del  from  ferrocyanide  of  potassium,  sulphuric  acid  and  binoxide 
of  manganium  ;  also  from  ferrocyanide  of  potassium  and  barium, 
bisulphate  of  potassa  and  the  binoxide. — ( Journ.  f.  prakt.  Chem. 
Ixxvi.  343.) 
Behaviour  of  nascent  hydrogen  to  organic  compounds. — A. 
Genther  found  that  sesquichloride  of  carbon  C^  Clg  is  reduced  to 
the  protochloride  C^  Cl^  in  the  presence  of  zinc  and  diluted  sul- 
phuric (not  muriatic)  acid.  Bichloride  of  carbon  C2  Cl^  is,  un- 
der the  same  circumstances  with  sulphuric  or  muriatic  acid,  con- 
verted into  chloroform  C2  HCI3,  and,  by  continued  contact,  into 
chloride  of  methylene  C2  H2  CI2.  Nitrobenzole  Q^.^  H^^  NO^ 
yields  anilina  C12  N,  and  nitrous  ether  C^^  0,  NO3  is  de- 
composed into  little  ethylamina  and  much  ammonia  (Ann.  d. 
Ch.  u.  Ph.  xxxi.  42— 49.) 
