454  Gleanings  from  the  German  Journals.  {  Ams^tu^879arnu 
turbid  by  acetic  acid  and  sodium  chloride,  and  was  found  to  contain 
albumen,  gelatin,  sugar,  creatin,  inosinic,  lactic  and  carbonic  acids  and 
oxyhemoglobin.  The  ashes  contained  potassium  chloride,  sodium 
chloride,  and  phosphate  and  sulphates  of  calcium,  magnesium  and  iron* 
— Pharm.  Ztschr.f.  RussL,  July  I,  1879,  p.  385. 
Mannit  from  Cane-sugar.— An  unusually  large  yield  of  mannit, 
amounting  to  150  grams  from  3  kilos  of  cane  sugar,  was  obtained  by 
Richter  in  almost  colorless  crystals  as  a  by-product  when  preparing 
lactic  acid  in  the  usual  manner. — Archiv  d.  Pharm.,  July,  1879,  p.  27. 
Detection  of  Bromide  in  Iodide  of  Potassium. — A.  Jandousch 
calls  attention  to  the  fact  that  potassium  bromide  yields  no  precipitate 
with  mercuric  chloride,  while  potassium  iodide  precipitates  red  mercuric 
iodide,  which  is  redissolved  as  long  as  undecomposed  potassium  iodide 
is  present,  but  remains  undissolved  when  this  is  no  longer  the  case.  One 
gram  potassium  iodide  is  entirely  decomposed  by  0*82  mercuric  chloride 
and  8*2  cc.  of  an  aqueous  solution,  containing  in  the  liter  50  grams  of 
mercuric  chloride,  are  necessary  to  obtain  a  permanent  precipitate. 
The  iodide  should  not  contain  iodate,  and  before  testing  it  should  be 
dehydrated  in  case  it  contains  water. 
Lepage  shakes  12  parts  of  potassium  iodide  with  150  parts  of  90 
per  cent,  alcohol,  and  considers  the  iodide  pure  if  there  is  no  undis- 
solved residue.  The  Austrian  Pharmacopoeia's  test  consists  in  precipi- 
tating potassium  iodide  with  silver  nitrate,  and  digesting  the  precipitate 
with  ammonia  when  that  from  pure  potassium  iodide  is  not  dissolved. — - 
Pharm.  Post,  July  1,  1879,  p.  199. 
Manufacture  of  Soda  and  Potash  from  Sulphides. — Ernest  Sier- 
mann  grinds  the  sulphides  together  with  alumina,  and  heats  the  mixture 
to  redness,  when  alkali  aluminate  and  sulphurous  acid  form,  the  latter 
being  conducted  into  lead  chambers.  The  mass  is  lixiviated,  aluminate 
decomposed  by  carbonic  acid  and  the  potash  or  soda  extracted  by  water 
as  potassium  or  sodium  carbonate. —  Chem.  CentralbL,  1879,  p.  480. 
Artificial  Karlsbad-salt. — Prof.  Alme>n  recommends  mixing  sodium 
chloride  20  grams,  sodium  bicarbonate  42  grams,  sodium  sulphate 
104  grams,  and  potassium  sulphate  3  grams,  and  dividing  the  mixture 
into  7  equal  parts,  one  of  which  is  sufficient  for  1  quart  of  good 
spring-water.  iocooo  grams  Karlsbad-water  thus  prepared  contain 
521  grams  dehydrated  salts,  which,  with  the  22  grams  of  salts  which. 
