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consideied  ihut  each  country  has  to  make  a  choice  of  those  iiieaus 
which  aie  best  suited  to  the  local  conditions.  For  instance,  in  a 
country  like  the  Congo  Free  State,  ivhere  Gl.  faLpaiis  is 
omnipresent,  it  would  be  impossible  to  move  the  population  away 
from  it,  so  that  such  measures  as  clearing  would  have  to  be  adopted. 
In  Rhodesia,  on  the  other  hand,  it  has  been  possible  to  adopt  rather 
drastic  measures,  partly  owing  to  the  physical  configuration  of  the 
country,  partly  on  account  of  the  restricted  distribution  of  Gl. 
palpalis,  partly  on  account  of  the  scantiness  of  the  population,  and 
paitlj'  on  account  of  the  lack  of  any  very  great  commercial  movement 
amongst  the  natives. 
At  one  time  native  transport  was  an  important  item,  as  all  goods 
passing  into  the  K.atanga  and  eastern  portions  of  the  Congo  Free 
State  w^ent  through  the  country,  but  ^vith  the  advent  of  the  railway 
m  the  South,  and  the  adoption  of  the  Congo  river  as  the  transport 
route  to  the  East  of  the  Free  State,  these  movements  were  interrupted. 
Except  for  the  inter-tribal  communication  along  the  border,  there  is 
no  inducement  foi  the  Rhodesian  natives  to  go  into  the  Congo.  A 
certain  number  did  go  to  the  Katanga  mines  for  work,  but  this  was 
never  very  popular  and  never  affected  any  great  number.  The  more 
natural  outlet  for  the  labour  has  been  to  the  South. 
Before  we  left  England  in  May,  igo/,  we  suggested,  on  general 
grounds  that  natives  of  North-Eastern  Rhodesia  should  not  be 
allowed  to  seek  work  in  the  Katanga,  and  that  the  Luapula  river 
should  be  closed  for  traffic.  The  advisability  of  this  measure  became 
still  more  apparent  very  shortly  after  we  had  entered  the  country, 
particularly  as  several  cases  of  human  trypanosomiasis  had  been  found 
amongst  natives  who  had  been  in  that  portion  of  the  Congo  Free 
State,  and  who  had  apparently  contracted  the  disease  while  there. 
Consequently  in  November  of  the  same  year  we  insisted  more  strongly 
on  the  importance  of  the  step,  and  at  the  same  time  suggested  that 
the  canoes  along  the  Luapula  river  should  be  confiscated,  that  the 
Congo  Free  State  authorities  should  be  requested  to  co-operate  in 
tins  woik,  that  all  cases  of  the  disease  should  be  segregated,  and  in 
order  that  this  might  be  done  that  special  medical  officers  should  be 
appointed  for  Sleeping  Sickness  work,  that  villages  should  be 
lemoied  from  the  vicinity  of  Gl.  palpalis,  and  where  this  was 
impossible  that  clearings  should  be  made.  In  December,  and  again 
