AMju^ui)^2.RM  }  Gleanings  from  the  European  Journals.  301 
Antimonic  blue. — This  new  beautiful  pigment  which,  however,  can- 
not be  used  upon  lime,  is  easily  prepared  by  dissolving  metallic  an- 
timony in  aqua  regia,  filtering  through  granulated  glass  and  adding 
a  dilute  solution  of  ferrocyanide  of  potassium  as  long  as  a  precipitate 
is  produced.  It  resembles  ultramarine,  and  yields,  with  chrome  yel- 
low or  chromate  of  zinc,  a  green  color,  scarcely  less  bright  than  Paris 
green,  but  much  less  poisonous.  It  may  be  used  with  oil,  varnish, 
gum,  glue  and  starch. — Ibid.,  from  Polyt.  Notizbl.  xxvii,  112. 
Arseniate  of  antimony. — The  grannies  antirnoniaux  de  Papillaud 
contain,  according  to  H.  Blaser,  each  0*0005  grm.  of  this  compound, 
which  appears  to  be  also  used  in  Russia  in  doses  of  0.0012  grm.  four 
times  daily.  Hager  prepares  it  by  first  obtaining  oxide  of  anti- 
mony from  the  chloride  by  precipitating  with  dilute  solution  of  car- 
bonate of  soda,  washing  with  a  warm  solution  of  the  same  salt, 
then  with  distilled  water,  and  drying.  Ten  grm.  of  the  oxide  are 
dissolved,  with  moderate  boiling,  in  four  times  tee  quantity  of  muriatic 
acid  of  25  per  cent.  After  cooling,  small  fragments  of  carbonate  of 
soda  are  added  until  a  faint  turbidity  becomes  permanent.  12  grm. 
of  anhydrous  neutral  arseniate  of  soda  are  dissolved  in  120  grm.  of 
distilled  water,  into  which  solution  the  antimony  solution  is  gradually 
dropped  with  continued  stirring.  The  liquid  is  then  diluted  with 
more  distilled  water  and  the  precipitate  washed  by  decantation  and 
upon  the  filter,  until  the  filtrate  ceases  to  occasion  a  turbidity  with  ni- 
trate of  silver.  It  is  then  dried  at  a  temperature  of  about  50°  to  60° 
C,  and  then  constitutes  a  snow-white,  not  very  heavy  powder.  Its 
composition  is  SbOs,  As05,  and  it  contains  56  per  cent,  oxide  of  an- 
timony and  44  per  cent,  arsenic  acid.  If  the  solution  of  the  chloride 
is  added  too  rapidly,  or  if  the  precipitate  is  washed  with  hot  water, 
the  preparation  contains  an  excess  of  antimony. —  Pliarm.  Centr. 
Halle,  1872,  N.  20. 
Chloride  of  mercuric  ethyl  was  first  prepared  by  Strecker  and  Frank- 
land  from  the  iodide.  A  very  simple  method,  according  to  Priimers, 
is  to  add  an  alcoholic  solution  of  corrosive  sublimate  to  mercuric  ethyl ; 
the  crystalline  precipitate  is  washed  upon  a  filter  with  warm  water 
and  dried  over  sulphuric  acid^  The  reaction  is  as  follows :  Hg 
(C4H5)2+Hg  Cl2  =  2  Hg(C4II5)Cl.  It  occurs  in  white  glistening  scales, 
is  little  soluble  in  water,  ether  and  cold  alcohol,  but  dissolves  freely 
in  hot  alcohol.  At  40°  C.  it  sublimes  without  fusing  previously ;  its 
odor  is  peculiar,  not  disagreeable.    Stannous  chloride,  potassium  io- 
