GLEANINGS  FROM  THE  GERMAN  JOURNALS.  40T 
carbonate  of  soda,  and  a  considerable  amount  of  sulphuretted 
hydrogen. — (Buchn.  N.  Repert.  x.  31.) 
Antimony  in  Arsenious  Acid. — Arsenious  acid  obtained  bj  re- 
peated sublimation  at  Andreasberg,  was  found  by  Dr.  A.  Streng 
to  consist  of  98-20  AsOg  and  1-68  SbOg.— (Chem.  Centralbl.  v. 
No.  48.   Buchn.  N.  Rep.  x.  36.) 
Dalleochine  or  Quinine  Green. — 10  grm.  sulphate  of  quinia, 
1000  grm.  water,  428  litre  solution  of  chlorinated  lime,  -032 
lit.  muriatic  acid,  and  "192  lit.  liquor  ammonise  are  heated  to 
20''  R.  (77^  F.)  and  after  cooling,  filtered.  The  dalleochine  has 
the  appearance  of  a  green  resin,  is  fusible,  insoluble  in  water, 
benzine,  oil  of  turpentine,  bisulphide  of  carbon  and  ether,  but 
soluble  in  alcohol,  wood  spirit  and  glycerin.  Acetic  acid  imparts 
to  it  a  blue  color,  nitric,  muriatic  and  sulphuric  acid  dissolve  it  with 
a  brown  color,  the  green  being  restored  on  neutralization.  Its 
solutions  are  precipitated  by  caustic  alkalies,  by  corrosive  sub- 
limate, pale  green  ;  decolorized  by  protochloride  of  tin  ;  nitrate 
of  silver  and  alum  have  no  reaction.  The  alcoholic  solution, 
diluted  with  water,  dyes  silk,  woolen  and  cotton,  the  latter  with 
a  mordant  of  albumen. — (Dingl.  Polyt.  Journ.  clix.  66,  67.  Ch. 
Centralbl.  vi.  224.) 
A  double  salt  of  carbonate  of  li7ne  and  chloride  of  calcium.,  Ca 
CI+2CaO,  CO2+6HO  was  observed  by  J.  Fritzsche  in  chloride 
of  calcium  prepared  for  technical  purposes  ;  it  was  in  microsco- 
pic prisms,  which  are  readily  decomposed  by  heat  and  by  water. 
It  may  be  obtained  by  adding  ammonia  to  a  very  concentrated 
solution  of  chloride  of  calcium  and  exposing  it  to  the  air  
(Bullet,  de  St.  Petersb.  iii.  285-292.  Chem.  Centralbl.  vi. 
225-227.) 
Composition  of  Gutta  Percha. — E.  H.  v.  Baumhauer  found 
gutta  percha  to  consist  of  C2qHj^.,  and  several  products  of 
oxidation,  among  which  he  proved  to  be  ^2o^\(f^^^2Q^iS^'i^  '^"^^ 
formic  acid.  Oxidation  is  the  cause  of  gutta  percha  becoming 
brittle — (Journ.  f.  pr.  Ch.  Ixxviii.  298.  Wittst.  V.  Schr.  ix. 
563-567.) 
Lead  cerate. — Eggenfels  prevents  this  cerate  from  turning 
