378 
CONCLUSIONS 
Studying  my  statistics,  I  observe  that  the  malaria  for  the  period 
of  five  years  before  the  undertaking  of  the  sanitary  measures  reached 
8o'g  per  cent. ;  after  the  period  of  three  years,  from  the  beginning 
of  these  measures,  malaria  among  the  children  was  reduced  to  i  per 
cent. ;  consequently  we  come  to  the  conclusion  that  the  suppression 
of  malaria,  and  the  restoring  to  health  of  Pangrati  and  Vatrachonisi, 
are  entirely  due  to  the  undertaking  of  sanitary  measures  in  the 
river-bed  of  the  branches  of  the  Illisus  river. 
We  can,  therefore,  wage  war  on  malaria  with  good  results  in  a 
country  if  we  proceed  to  disinfect  it  as  described. 
The  photographs  show  sections  of  the  Illisus  river  before  and 
after  the  operations. 
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