—  45

THE  WORLD’s  FAIRS

POSTSCRIPT.

The  foregoing  letters  were  published
  vvith  the  desire  Io  establish  the
faot,  that  exhibition  matters  have  arrived
  at  that  stage  of  developement,
when  it  becomes  possible  to  speak  of
the  existence  of  an  exhibition  science.
An  exhibition  science  with  its  own
peculiar  principles,  like  any  other
science,  oannot  fail  to  bring  practice
to  theoretical  consciousness  on  those
points  in  which  the  necessity  of  reform
  has  made  itself  feit  in  our  past
experience.
Exhibitions  are  a  subject.  particularly
  adapted  for  the  work  of  international ­
  congresses,  for  all  countries
have  accepted  them,  as  one  of  the  best
means  of  furthering  the  intellectual,
moral  and  physical  improvemont  of
the  population.