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ACTION  OF  OZONE  ON  ORGANIC  SUBSTANCES. 
ON  THE  ACTION  OF  OZONE  ON  ORGANIC  SUBSTANCES. 
By  M.  Gorup-Besanez. 
In  a  previous  memoir  the  author  has  examined  the  action  of 
ozone  on  various  substances  dissolved  or  held  in  suspension  in 
water.  The  products  obtained,  he  finds,  are  sometimes  analo- 
gous to  those  given  by  the  reaction  of  peroxides  at  a  higher 
temperature  on  the  same  substances. 
This  is  not,  however,  generally  the  case,  and  certain  bodies 
which  are  easily  oxidized  by  peroxides  entirely  resist  the  action 
of  ozone. 
The  experiments  set  forth  by  the  author  seem  to  him  to  show 
a  remarkable  coincidence  between  the  mode  of  action  of  ozone, 
and  that  of  the  animal  organism  considered  as  an  oxidizing 
agent. 
The  author  at  first  completed  his  experiments  on  the  action 
of  ozone  on  certain  substances  in  the  absence  of  alkalies.  To 
the  bodies  unattacked  by  ozone  he  adds  unnitrogenized  organic 
acids,  such  as  acetic,  butyric,  palmitic,  lactic,  oxalic,  tartaric, 
malic,  and  citric  acids,  also  mannite,  glycerine,  and  oleine. 
To  the  bodies  which  undergo  transformation  he  has  added  tyro- 
sine, which  furnishes  a  brown  matter  analogous  to  M.  Stsedeler's 
erythrosine. 
He  then  studied  the  influence  of  free  alkalies,  or  carbonates 
on  the  oxidation  of  organic  matters  by  ozone.  He  found  that 
the  presence  of  alkalies  favors  this  oxidation,  and  sometimes 
changes  the  nature  of  the  products  formed. 
Uric  Acid. — A  watery  solution  of  pure  uric  acid,  with  the 
addition  of  a  few  drops  of  potash,  absorbs  the  ozone  in  the 
same  way  as  in  the  absence  of  potash,  only  that  there  is  a  con- 
tinuous disengagement  of  ammonia.  Urea  and  oxalic  acid  are 
found  in  the  liquid,  but  no  allantoine,  which  is  formed  with  uric 
acid  and  ozone  without  alkali. 
Urea  quickly  absorbs  ozone ;  ammonia  is  disengaged  in  pre- 
sence of  potash.  When  the  absorption  is  completed,  the  liquid 
contains  only  carbonate  of  potash.  Urea  is  not  decomposable 
by  ozone  without  alkalies. 
Leuein. — At  the  beginning  of  the  reaction  a  slight  disen- 
gagement of  ammonia  takes  place,  which  soon  ceases,  leaving 
