^Aug^is™'}   Gleanings  from  European  Journals.  361 
or  gaseous.  The  following  reactions  were  obtained  with  the  alkaline 
residue  : 
Chloride  of  platinum  produces,  after  the  addition  of  alcohol  and 
ether,  a  green-yellow  precipitate.  H2S04  and  bichromate  of  potas- 
sium causes  a  violet  coloration.  Fuming  HN03  yields  at  first  a  yel- 
low color,  which  turns  green,  then  dark-green,  and  finally  colorless. 
White  precipitates  are  obtained  with  tannin,  silver  nitrate,  Fehling's 
solution  and  corrosive  sublimate  ;  with  chloride  of  gold  a  yellowish- 
white  precipitate,  soluble  in  HC1 ;  with  iodine  a  brown  precipitate ; 
with  bromine,  sulphur-yellow,  becoming  orange  and  brown ;  with 
phospho-tungstic  acid,  voluminous  yellowish- white.  Nessler's  reagent 
gave  the  reaction  of  ammonia;  chlorine  had  no  effect;  with  sulphu- 
ric, muriatic  and  oxalic  acids,  no  crystalline  compounds  were  obtained. 
—  Chem.  Cent.  Blatt.,  No.  21  ;  Polyt.  Journ.,  ccxii,  67. 
Pure  Albumen. — Graham's  statement,  that  by  dialysis  for  three 
or  four  days  an  albumen  may  be  obtained  which,  on  incineration,  leaves 
no  trace  of  ashes,  has  been  examined  by  B.  Aronstein,  and  found  to 
be  correct.  It  is  necessary,  however,  to  use  very  fine  parchment 
paper,  made  by  De  la  Rue,  of  London,  no  German  parchment  paper 
giving  satisfactory  results.    The  author's  conclusions  are  as  follows  : 
1.  Pure  albumen  is  completely  soluble  in  water ;  its  solution  in 
the  animal  liquids  is  not  affected  by  either  the  soluble  or  insoluble 
salts. 
2.  Pure  albumen  is  neither  coagulated  by  heat,  nor  by  alcohol ;  in 
both  cases  coagulation  depends  upon  the  presence  of  salts  in  its  natu- 
ral solutions. 
3.  The  insoluble  salts,  dissolved  in  the  animal  liquids,  form  no 
compound  with  albumen  ;  their  solution  in  the  blood  serum,  as  well  as 
in  the  whites  of  eggs,  is  effected  by  an  organic  body  which  does  not 
belong  to  the  albuminous  compounds. 
4.  The  two  liquids  mentioned  contain,  besides  albumen,  paraglob- 
ulin,  which  albuminous  body  is  insoluble  in  water,  but  here  dissolved 
by  the  salts. 
5.  Pure  serum  albumen  is  precipitated  by  ether,  but  not  pure  egg 
albumen;  in  the  presence  of  salts  the  action  of  ether  is  reversed. — 
Zeitseh.f.  Anal  Chem.,  1874,  71;  Arch.  f.  Physiol,  viii,  75. 
Detection  of  Morphia  in  the  Presence  of  Quinia. — L.  W.  Jassoy 
proposes  to  agitate  the  supposed  mixture  with  twenty  times  its  weight 
