Am,  Jour  Phaem.  ) 
Aug.  1,  1871.  I 
Tincture  of  Iodine,  etc. 
359 
Arts^  page  66,  where  we  state  that  gradually  only  we  are  enabled  to 
displace  from  the  market  the  burnt  extract  with  a  more  pleasant  pre- 
paration. 
"  If  we  recollect  right,  Mr.  Clacius  has  not  bought  of  us  any 
extract  of  malt  for  over  a  year  or  more,  and  we  are  therefore  sur- 
prised at  his  statements,  in  contradiction  of  which  we  insist  upon 
establishing  the  following  points  : 
"  1.  That  any  person  can  drink  one  or  two  pounds  of  our  Liebig's 
Extract  of  Malt  with  comfort,  and  without  nausea,  of  which  Mr. 
Clacius  complains. 
2.  That  our  Extract  of  Malt  is  extract  of  malt,  made  from  malt, 
in  contradiction  to  the  false  insinuation  of  Mr.  Clacius. 
3.  That  our  Extract  of  Malt  contains  no  glycerin  whatsoever, 
although  we  warrant  it  to  keep  unfermented  throughout  the  summer. 
Having  found  a  proper  mode  of  preserving  it  unfermented  without 
the  addition  of  any  foreign  substance,  we  abandoned  the  use  of  gly- 
cerin in  this  instance  a  considerable  time  ago. 
"  All  these  points  we  insist  upon  Mr.  Clacius  to  decide  by  a  com- 
mittee of  twelve  of  the  best  druggists,  or  druggists  and  physicians, 
of  Chicago,  all  to  he  chosen  hy  himself. 
"  As  soon  as  these  points  are  established,  we  shall  tell  Mr.  Clacius 
'  how  an  exact  test  of  the  purity  and  general  quality  of  an  extract  of 
malt  can  be  made,'  which,  in  his  article,  he  acknowledges  too  difficult 
for  himself,  or,  in  other  words,  which  he  acknowledges  he  cannot  do, 
while  at  the  same  time  he  undertakes  to  palm  off  upon  your  readers 
his  critique,  based  upon  facts  which  he  acknowledges  himself  unable 
to  establish." 
NOTICE  ON  THE  DECOLORIZA.TION  AND  DEODORIZATION  OF 
TINCTURE  OF  IODINE. 
By  James  Laker  Macmillan. 
Within  the  last  year  or  two  an  unusual  degree  of  attention  has  been 
devoted  to  methods  for  decolorizing  tincture  of  iodine.  The  agent 
commonly  resorted  to  for  this  purpose  is  ammonia ;  a  practice  which 
cannot  be  too  highly  censured,  inasmuch  as  a  change  takes  place 
which  is  highly  detrimental  to  its  medicinal  properties.  By  the  addi- 
tion of  ammonia  to  this  tincture,  one  or  more  compounds  of  iodine 
and  nitrogen  are  formed,  which  are  thrown  down  in  the  state  of  a 
