444 
OZONE. 
cognac,  potato,  or  wood  spirit  may  thus  be  easily  distinguished. 
The  test  only  occupies  a  few  minutes  ;  but  rectified  ether  must 
be  employed,  as  common  commercial  ether  also  leaves  an  odor- 
ous residue  on  evaporation. — Chem.  News,  June  19,  1868,  from 
Neue  Grewerbebldtter  aus  Kurhessen. 
OZONE. 
Dr.  H.  Day,  in  a  report  on  this  article  made  to  the  St.  An- 
drews Medical  Graduates'  Association,  gives  the  conclusions  at 
which  he  has  arrived,  the  most  important  of  which  we  subjoin  : 
There  can  be  no  escaping,  at  this  moment,  from  the  theory 
that  ozone  is  a  modified  condition  of  oxygen,  indeed,  is  oxygen 
plus  force,  which  force  is  probably  used  in  condensation — in 
other  words,  the  power  or  capability  of  oxygen  to  combine  with 
itself. 
For  the  production  of  ozone  in  the  laboratory,  no  method  is 
so  good  as  that  accomplished  by  the  aid  of  the  induction  coil. 
The  production  of  ozone  in  the  air,  if  it  be  there,  is  not  yet  in 
any  way  definitely  understood. 
The  ordinary  tests  for  ozone  are  imperfect,  not  because  they 
will  not  prove  the  presence  of  ozone,  but  because  they  prove 
too  much — that  is  to  say,  the  presence  of  other  bodies  also  com- 
mon to  the  atmosphere.  » 
In  its  action  on  the  body  the  effects  of  ozone  seem  to  be  con- 
fined to  the  respiratory  passages  and  structures  ;  in  fact,  it  is 
purely  local  in  its  action,  resembling  closely  diluted  chlorine  and 
diluted  bromine  in  vapor  ;  the  phenomena  induced,  varying  in 
intensity,  may  be  catarrhal,  bronchial,  or  pneumonic,  nor  is 
there  any  evidence  of  any  other  class  of  diseases  from  ozone. 
On  dead  matter,  ozone  exerts  a  powerful  destructive  action, 
resembling  in  this  way  chlorine,  iodine,  and  especially  bromine. 
Ozone  is  a  disinfectant  and  deodorizer  belonging  to  those 
bodies  which  disinfect  and  deodorize  by  resolving  and  decompos- 
ing into  primitive  and  innocuous  forms,  competing  in  this  re- 
spect with  substances  already  named — i.  e.,  chlorine,  bromine, 
and  iodine.  It  possesses  these  qualities  in  a  less  degree  than 
chlorine  and  bromine,  and  is,  in  many  cases,  not  so  applicable 
as  iodine. 
