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592  Chemical  Notes.  g£JB?*m- 
Two  samples  made  according  to  the  present  formula  and  respect- 
ively six  and  two  months  old,  were  examined  in  the  same  manner, 
and  gave 
Moisture  0.16 ;  aqueous  solution  14  4;  acetic  acid  solution  50.5 ;  mercury  33 per  ct. 
0.12        "  11.76     "      "         "      49.3        «      38  " 
Hvdroohloric  acid  dissolved  nothing.  In  the  acetic  acid  solution 
mercurous  salt  was  found,  mere  traces  of  it  in  the  last  one,  and  a 
somewhat  larger  quantity  in  the  older  sample. 
Nickel  bromide  was  prepared  by  A.  Darner  Drew,  Ph.  G..  by 
treating  the  granulated  metal  with  bromine  under  water,  and  care- 
fullv  evaporating  the  dark  green  solution,  when  deliquescent  deep 
green  needles  are  obtained,  which  dissolve  freely  in  water,  but  are 
much  less  soluble  in  alcohol.  The  reaction  of  hydrobromic  acid  upon 
the  metal,  aided  by  heat,  is  very  slow.  Powdered  nickel  heated  to 
redness,  absorbs  bromine  vapor,  yielding  bright  yellow  scales  of  the 
anhydrous  salt,  which  are  deliquescent  and  dissolve  in  water  with  a 
green  color.  The  salt  has  been  employed  medicinally  as  a  hypnotic 
and  sedative,  and  is  conveniently  administered  in  the  form  of 
Syrup  of  Nickel  bromide. — Put  into  a  pint  flask  12  oz.  of  water, 
add  377  grains  of  bromine  and  137  grains  of  granulated  nickel,  di- 
gest at  a  gentle  heat  until  reaction  ceases,  filter,  and  add  sugar  2-1  oz 
and  sufficient  water  to  make  32  fluidounces.  The  syrup  has  a  beauti- 
ful green  color,  and  contains  5  grains  of  crystallized  nickel  sulphate 
to  the  fluidraehm.  which  is  an  average  dose. 
Manganese  sulphate. — Two  commercial  samples,  one  of  American, 
the  other  of  German  manufacture,  were  examined  by  Doane  Herring, 
Ph.  G.  Both  were  found  free  from  zinc,  iron  and  copper,  but  con- 
tained magnesium,  which  was  precipitated  by  ammonium  phosphate 
from  the  solution  of  the  salt  previously  deprived  of  manganese  by 
excess  of  ammonium  sulphide.  The  amount  of  the  impurity  was  not 
estimated. 
Bismuth  subnitrate. — Four  commercial  samples  of  this  salt  were 
examined  by  Samuel  L.  Rambo,  Ph.  G.  On  drying  the  salt  at  120CC. 
the  loss  in  weight  from  the  evaporation  of  moisture  varied  between 
2.0  and  3.42  per  cent.,  and  the  oxide  resulting  from  ignition,  weighed 
79.2,  79.8,  80.2,  and  80.25  per  cent.  Using  Fleitmann's  test  two  sam- 
ples were  found  to  be  free  from  arsenic,  the  other  two  containing 
