IODISED  GLYCERINE  IN  VARIOUS  DISEASES  OF  THE  SKIN.  133 
In  conclusion,  it  may  be  predicted,  with  great  probability, 
that  caustic  barytes  being  once  easily  and  cheaply  prepared  in 
large  quantities,  will  be  applicable,  not  only  to  scientific  re- 
searches, but  alto  to  industrial  and  commercial  purposes. 
Mr.  Redwood  said  the  Society  was  much  indebted  to  Dr. 
Mohr  for  this  valuable  practical  paper.  The  method  suggested 
for  the  preparation  of  crystallized  hydrate  of  barytes  appeared 
to  be  a  very  good  one.  The  proposed  applications  of  caustic 
barytes  were  also  well  worthy  of  consideration,  especially  that 
which  related  to  the  production  of  pure  liquor  potassse.  This 
was  often  required  for  analytical  purposes,  and  Chemists  not 
unfrequently  found  it  difficult  to  obtain  the  preparation  in  a  suffi- 
cient state  of  purity  to  render  it  suitable  for  use  in  some  cases, 
as,  for  instance,  in  the  separation  and  estimation  of  alumina. 
If  used,  as  Dr.  Mohr  suggested,  for  purifying  the  liquor  potassse 
made  in  the  usual  way,  much  caution  should  be  exercised  to 
avoid  leaving  baryta  in  the  solution,  especially  if  it  was  intended 
for  use  in  medicine,  as  barytes  possesses  poisonous  properties. — 
Trans,  Lond.  Pharm.  Society,  in  Pharrn.  Jour.  Dee.  1856. 
IODISED  GLYCERINE  IN  VARIOUS  DISEASES  OF  THE  SKIN. 
By  Dr.  Richter,  of  Vienna. 
This  solution  is  prepared  by  dissolving  one  part  of  iodide  of 
potassium  in  two  parts  of  glycerine,  and  pouring  this  liquid  on 
one  part  of  iodine,  which  it  dissolves  completely.  This  solution 
has  the  great  advantage  over  alcoholic  solutions  of  not  drying  ; 
in  consequence  the  surfaces  remain  supple,  and  the  action  and 
absorption  of  the  iodine  continues  for  a  long  time.  To  use  the 
solution  it  must  be  spread  upon  the  diseased  parts  and  covered 
with  gutta  percha  paper  to  prevent  the  evaporation  of  the  iodine, 
and  to  augment  the  perspiration  of  the  parts  which  have  been 
touched.  The  apparatus  is  left  untouched  for  twenty-four  hours 
and  the  degree  of  the  reaction  regulates  the  further  application, 
as  for  example,  bathing  "with  cold  water  and  fresh  application. 
The  iodised  solution  occasions  pain,  which  varies  in  intensity 
and  duration,  according  to  the  state  of  the  diseased  part  and  the 
sensitiveness  of  the  individual.    There  has,  however,  never  been 
