4 
GLEANINGS  FROM  THE  GERMAN  JOURNALS.  443 
S03  with  a  beautiful  red  color,  which  is  altered  by  alcohol  to 
violet  blue,  afterwards  bluish  green :  v/ater  precipitates  the 
solution  purplish.  If  concentrated  S03  is  added  to  some  iron 
filings,  and  the  resulting  gas  conducted  into  tincture  of  guaiacum, 
this  will  assume  a  blue  color,  if  nitric  acid  was  present. — (Vol. 
cxi.  373.) 
On  the  influence  of  Chlorous  Acid  upon  Organic  Substances. — 
J.  Schiel,  Ann.  cxii.  73 — 80,  has  made  some  experiments,  and 
obtained  the  following  results  :  anhydrous  glycerin  absorbs  a 
portion  of  gaseous  C103,  when  an  explosion  takes  place  ;  after 
that  the  reaction  between  the  two  bodies  is  progressing  slowly, 
even  in  direct  sunlight.  By  PbO  C103  and  S03  alcohol  is  con- 
verted into  acetic  ether  ;  amylic  alcohol  into  valerianate  of  oxide 
of  amyle.  Urea  dissolves  in  aqueous  C103  with  evolution  of 
C02  and  probably  NO,  and  is  converted  into  a  crystalline  com- 
pound, having  a  slight  acid  reaction,  soluble  in  alcohol  and 
water,  and  of  the  composition  C2N2H402+NH4  CI ;  its  chemical 
behaviour,  however,  does  not  coincide  with  this  formula.  Uric 
acid  under  the  same  circumstances  yields  pearly  scales,  soluble 
in  water  and  boiling  alcohol,  and  producing,  after  neutralization 
with  soda,  a  crystalline  precipitate  with  baryta  and  lead  salts, 
and  a  curdy  precipitate  with  nitrate  of  silver  :  the  author  calls 
it  chloraluric  acid^  and  has  found  its  formula,  C14  Hn  N6  C10n. 
Besides  this,  another  substance  is  formed  which,  on  the  applica- 
tion of  heat,  readily  yields  murexide. 
On  Quercitrin. — H.  Hlasiwetz  has  studied  the  decomposition 
of  quercitrin,  (Annal.  cxii.  96 — 118.)  By  hot  potassa,  quercetin 
yields  sugar,  (phloroglucin  C12H606-|-4HO,)quercetic  acid,  2HO, 
O34H10O14-|-7HO,  and  a  body  which  appears  to  be  a  compound 
of  two  equivalents  of  the  former,  with  one  of  the  latter.  Quer- 
cetic  acid  crystallizes,  is  soluble  in  alcohol,  ether  and  hot  water, 
is  partly  sublimable,  colors  Fe2  Cl3  deep  bluish  black;  its  solution 
is  colored  yellow  by  alkalies,  turning  carmine  red  in  contact  with 
air.  The  formula  for  quercetin  was  found  to  be  C46H16O20,  but 
it  retains  at  200°C.  (392°  F.)  1HO.  The  composition  of  quer- 
citrin, as  analysed  by  Bolley,  must  be  C70H36O40,  of  the  author's 
and  many  other  chemists'  C58H30O34,  of  Bochleder's,  obtained 
