494  Gleanings  from  Foreign  Journals.  {Am'o^mdaTm' 
After  filtering,  the  solution  is  exactly  neutralized  and  an  alkali 
acetate  is  added,  when  treated  with  sulphuretted  hydrogen  or  sul- 
phydrate  of  ammonium  it  still  yields  a  precipitate,  and  on  exposure 
to  the  air,  austrium  with  other  metals  is  precipitated.  The  spectrum 
of  austrium  is  characterized  by  two  violet  lines,  the  more  intense 
one  being  near  D  which  is  the  principal  one  for  potassium,  the  other 
is  a  little  further  distant.  Austrium  is  separated  from  zinc  with 
great  difficulty.  Jungfleisch  and  Lecoq  de  Boisbaudran  believe  it  to 
be  identical  with  gallium.  Certain  reactions  of  oxide  of  austrium, 
for  instance,  its  solubility  in  caustic  alkalies  and  its  adherence  to  zinc 
sulphide  when  precipitated,  are  identical  with  gallium.— Jour,  de  Phar. 
et  de  Chimie,  xiv,  p.  41. 
Butter  tests. — Liebschutz  saponifies  the  butter  with  barium  hydrate 
and  extracts  the  glycerin  with  stronger  alcohol,  filtering  and  then 
evaporating  at  100°  C.  Pure  butter  yields  3*75  per  cent,  glycerin, 
artificial  butter,  7  per  cent. — Phar.  Zeitschr.  f.  Russland,  xxv,  p.  397. 
Iodol  Gauze  is  prepared  by  saturating  gauze  in  the  following  solu- 
tion: R.  iodol  1,  resin  1,  glycerin  1,  alcohol  10. — Schweiz.  Wochen- 
schrift,  xxiv,  p.  275. 
Hydrochloric  Acid  free  from  Arsenic  is  obtained  by  macerating 
copper  shavings  in  the  acid  for  36  hours,  decanting  and  redistilling. 
According  to  Hager,  chloride  of  iron  and  chloride  of  tin  do  not 
yield  satisfactory  results,  as  more  or  less  of  these  salts  is  found  in 
the  distillate. 
Preservation  of  Salicylate  of  Sodium. — If  crystallized  or  powdered 
salicylate  of  sodium  is  placed  in  a  glass  vessel  and  exposed  to  the 
light  for  about  4  or  6  weeks  it  darkens,  loses  its  acid  reaction  and 
forms  dark  solutions,  whilst  the  same,  protected  from  light,  remains 
colorless  and  preserves  its  reaction.  Salicylate  of  sodium  is  also 
affected  by  moisture ;  when  kept  in  perfectly  dry  bottles  and  sheltered 
from  light  no  change  is  produced,  but  when  kept  in  paper  it  soon 
becomes  gray  and  inert.  Solutions  of  salicylate  of  sodium  made  with 
spring-water  soon  darken,  but  when  made  with  distilled  water  no 
change  occurs. — Nouveaux  Remedes,  ii,  379. 
Naphthalin  Leaves  for  exterminating  Moths  are  prepared  by  melting 
together  carbolic  acid  and  ceresin  each  1  part,  naphthalin  2  parts,  and 
painting  on  sheets  of  unglazed  paper. — Phar.  Rundschau,  Prag, 
xii,  p.  594. 
Characteristic  Reaction  between  Apomorphine  and  Cocaine. — "When 
