GLEANINGS  FROM  THE  GERMAN  JOURNALS. 
403 
treat  the  filtrate  as  above  (Ann.  d.  Ch.  und  Pharm.  xli. 
118-120.) 
Pus  from  an  abscess  on  the  right  hip  of  a  man  was  pale  yel- 
lowish, thickish  cream-like,  faintly  alkaline,  and  free  from  dis- 
agreeable odor  ;  spec.  grav.=l-022.  C.  Giesecke  found  it  to 
contain  88-76  water  and  11-24  solid  substances,  of  which  10*12 
were  organic,  1*12  of  inorganic  natures,  namely 
4-38  albumen  dissolved  in  the  serum. 
4-65  pus-corpuscles,  mucus,  together  with  little  leucine  and 
glutine. 
1-09  cholestearine  with  some  neutral  fat. 
0-59  chloride  of  sodium. 
0-32  soda  (combined  with  albumen)  with  little  phosphate  of 
soda  and  sulphate  of  potassa. 
0-21  phosphates  of  magnesia,  lime  and  protoxide  of  iron. 
88-76  water. 
100-00  (Ann.  d.  Ch.  and  Pharm.  xli.  110.) 
Specific  gravity  of  Ammonia, — By  operating  with  perfectly 
anhydrous  ammonia,  and  after  making  the  necessary  corrections, 
Professor  Jolly,  of  Munich,  found  the  spec.  gray,  of  liquid  am- 
monia at  0°  C,  and  compared  with  water  of  the  same  tempera- 
ture=:.6239,  -6261,  .6193,  average  =-6234,  or  one.sixth  less 
than  observed  by  Faraday.  The  specific  gravity  of  the  gas, 
compared  with  air  of  0*  C,  and  715  m.  m.  pressure  was  found 
=  .558,  .576,  .565.— (Buchn.  N.  Repert.  x.  115-124.) 
Use  of  Cyanide  of  Barium. — Margueritte  and  de  Sourdeval 
prepare  this  salt  from  baryta  under  the  influence  of  atmospheric 
nitrogen.  Prof.  Dr.  R.  Wagner  now  proposes  it  for  the  pre- 
paration of  hydrocyanic  acid  by  decomposing  it  with  dilute  sul- 
phuric acid.  With  superheated  steam  it  yields  18  per  cent, 
ammonia  and  carbonate  of  baryta,  from  which  cyanide  of  barium 
may  again  be  readily  made  ;  by  boiling  with  water,  particularly 
under  a  high  pressure,  it  is  changed  to  formiate  of  baryta, 
yielding  formic  acid  by  the  addition  of  sulphuric  acid  ;  super- 
heated steam  impregnated  with  carbolic  acid,  when  passed  over 
