Am.  Jour.  Pharm.  \ 
Sept.  1,  1872.  j 
Ozone  in  a  Concentrated  State. 
407 
In  the  sand-baths  at  Cette  and  Arcachon,  which  are  found  so  effi- 
cacious for  scrofulous  affections,  tumors,  &c,  what  takes  place  ?  The 
temperature  being  considerably  above  that  of  the  body  (over  40°),  the 
skin  is  wet,  the  sebaceous  matter  dissolves  in  the  perspiration,  and 
there  follows  absorption  of  the  salts  contained  in  the  sand. 
I  have  not  been  able  to  find  free  iodine  in  the  urine ;  the  use  of 
nitric  acid  has  always  been  necessary.  Besides,  iodine  once  intro- 
duced into  the  system  soon  forms  various  compounds. 
In  summing  up  his  results,  M.  Bernard  further  mentions  that  the 
elimination  of  the  salt,  commencing  two  hours  after  the  bath,  increases 
in  quantity  till  a  meal  is  taken,  after  which  it  diminishes  (probably 
because  of  the  water  received  into  the  system),  and  then  again  in- 
creases. It  ceases  completely  twenty-four  hours  after  the  bath,  what- 
ever the  amount  of  the  salt,  the  temperature,  or  the  duration  of  the 
bath.  A.  B.  M. 
—Chem.  News,  July  12,  1872. 
ON  THE  PREPARATION  OF  OZONE  IN  A  CONCENTRATED 
STATE. 
By  A.  Houzeau. 
My  experiments  on  the  electrification  of  oxygen,  or  of  air,  having 
made  me  fully  acquainted  with  the  most  favorable  conditions  for  the 
conversion  of  oxygen  into  ozone,  I  have  constructed  several  pieces  of 
apparatus,  which  unite  those  requisites  which  enable  the  largest  pos- 
sible quantity  of  ozone  to  be  obtained  from  electricity  of  a  given 
intensity. 
The  most  elementary  form  of  these  arrangements,  which  I  call  an 
"ozonizer,"  consists  of  a  straight  delivery  tube,  such  as  is  commonly 
used  in  the  generation  of  gas.  In  the  interior  of  this  tube  I  fit  a 
copper,  lead  or,  what  is  still  better,  a  platinum  wire  0*4  *to  0*6  m.  in 
length,  one  end  of  which  is  brought  outside  the  upper  part  of  the  tube 
by  a  lateral  opening,  which  is  afterwards  closed  by  wax  or  by  the 
blow-pipe  flame.  On  the  exterior  of  the  tube  a  wire  of  the  same 
metal  is  wound,  so  as  to  extend  nearly  as  far  down  the  outside  of  the 
tube  as  the  length  of  the  inner  wire. 
The  two  wires  being  put  in  communication  with  the  two  poles  of  an 
induction  coil,  giving  sparks  2  to  3  centimeters  in  length,  immediately 
cause  a  strong  ozonization  of  the  oxygen,  or  of  the  air  which  is  caused 
slowly  to  traverse  the  tube.    This  ozonizing  tube  can  of  course  be 
