more  or  less  personal,  and  must  be  undertaken  by  the  individual. 
Among  the  former  would  come  such  major  works  as  drainage,  the 
filling  up  of  swamps,  and  the  local  arrangements  and  organisation 
for  carrying  out  the  measures  detailed  below.  And  it  is  essential 
that  this  body  should  form  some  definite  plan  of  campaign  which, 
once  formed,  would  be  continuous  and  systematic,  and  would  not  be 
liable  to  alteration  by  conflicting  local  interests  or  petty  jealousies. 
Perseverance,  continuity,  and  permanence  are  essential. 
This  will  undoubtedly  require  legislation  in  certain  directions, 
and  in  framing  legislative  measures  in  connection  with  sanitation,  it 
is  necessary  that  they  should  be  as  simple  as  possible,  and  as  little 
burdened  with  legal  technicalities  and  machinery  as  practicable. 
In  my  experience  of  the  Tropics,  I  have  seen  admirable  measures 
rendered  a  dead  letter  through  the  difficulty  of  readily  and  easily 
bringing  offenders  within  the  meshes  of  the  law,  and  if  such  measures 
are  to  be  practically  elTective  we  must  ask  for,  and  I  am  sure  we  shall 
obtain,  the  whole-hearted  co-operation  of  the  magistracy. 
To  the  share  of  the  Government  or  central  body  will  also  fall 
the  duty  of  collecting  data  with  reference  to  malaria,  receiving- 
reports,  and  noting  results.  There  must  be  some  method  of 
observing  the  effect  of  the  different  measures,  and  the  central  body 
will  thus  be  able  to  control  the  expenditure,  diminishing  it  where 
improvement  has  been  effected,  and  increasing  it  where  required. 
Personal 
As  regards  {U)  the  measures  to  be  undertaken  by  individuals,  this 
will  resolve  itself  largely  into  a  question  of  personal  hygiene.  As  in 
all  sanitary  schemes,  certain  work  is  laid  upon  the  individual,  so  it 
must  be  in  anti-malarial  sanitation.  The  individual  must  not  be 
allowed  to  be  a  danger  to  the  community  by  harbouring  Anopheline 
larvae  in  his  compound  any  more  than  he  would  be  allowed  to  conceal 
a  case  of  smallpox,  and  employers  of  labour  must  either  personally, 
or  by  means  of  their  overseers,  see  that  the  measures  decided  on  are 
effectively  carried  out. 
Practical  Measures  against  Malaria 
Now  we  come  at  last  to  a  consideration  of  the  practical  measures 
which  are  especially  applicable  to  Jamaica,  many  of  which  have 
already  been  incidentally  mentioned. 
