﻿338 
  C. 
  F. 
  M. 
  SWYNNERTON. 
  

  

  The 
  infected 
  section 
  thus 
  includes 
  a 
  considerable 
  length 
  of 
  each 
  of 
  the 
  two 
  rivers 
  

   mentioned 
  and 
  this, 
  with 
  the 
  distribution 
  of 
  some 
  of 
  the 
  cases, 
  gave 
  rise 
  to 
  the 
  

   suspicion 
  that 
  the 
  infection 
  might 
  be 
  carried 
  by 
  G. 
  palpalis. 
  The 
  people 
  did 
  much 
  

   fishing, 
  and 
  it 
  was 
  possible 
  that, 
  meeting 
  at 
  the 
  rivers 
  in 
  the 
  course 
  of 
  this 
  occupation, 
  

   they 
  were 
  much 
  bitten 
  there 
  by 
  tsetses 
  and 
  infected. 
  Certainly 
  some 
  small 
  focus 
  

   of 
  this 
  fly 
  may 
  exist 
  on 
  some 
  reach 
  of 
  one 
  or 
  other 
  river 
  that 
  has 
  been 
  missed 
  by 
  

   Maclean's 
  search 
  and 
  mine, 
  but 
  this 
  is 
  unlikely, 
  and 
  it 
  could 
  not 
  in 
  any 
  case 
  account 
  

   for 
  the 
  position. 
  The 
  villages 
  in 
  the 
  tract 
  between 
  the 
  rivers 
  and 
  many 
  miles 
  from 
  

   either 
  were 
  infected 
  with 
  the 
  rest, 
  and 
  the 
  history 
  of 
  the 
  epidemic, 
  as 
  given 
  by 
  the 
  

   natives, 
  showed 
  that 
  it 
  travelled 
  from 
  village 
  to 
  village 
  irrespective 
  of 
  any 
  relation 
  

   to 
  rivers. 
  It 
  would 
  also 
  not 
  account 
  for 
  the 
  infection 
  of 
  women 
  and 
  children 
  at 
  a 
  great 
  

   distance 
  from 
  the 
  rivers, 
  and 
  still 
  less 
  for 
  the 
  case 
  of 
  the 
  young 
  man 
  I 
  shall 
  refer 
  

   to 
  below. 
  He 
  was 
  blind, 
  and 
  there 
  was 
  every 
  reason 
  to 
  credit 
  the 
  statement 
  made 
  

   of 
  him 
  that 
  he 
  had 
  never 
  previously 
  left 
  the 
  neighbourhood, 
  which 
  was 
  a 
  considerable 
  

   number 
  of 
  miles 
  from 
  the 
  Simiyu. 
  

  

  Experimental 
  evidence 
  was 
  still 
  lacking 
  when 
  I 
  left, 
  but 
  the 
  circumstantial 
  

   evidence 
  was 
  strong 
  in 
  favour 
  of 
  the 
  view 
  that 
  G. 
  swynnertoni 
  was 
  the 
  responsible 
  

   species. 
  It 
  was, 
  as 
  I 
  have 
  said, 
  taken 
  by 
  my 
  fly-boys 
  in 
  thousands 
  in 
  the 
  paths 
  

   and 
  villages 
  of 
  the 
  infected 
  section, 
  and 
  was 
  the 
  only 
  species 
  of 
  Glossina 
  that 
  could 
  

   be 
  found 
  there 
  at 
  all. 
  

  

  XVI. 
  — 
  Types 
  of 
  Sleeping 
  Sickness 
  Villages. 
  

  

  Village 
  completely 
  in 
  the 
  Bush. 
  — 
  A 
  small 
  triangle 
  formed 
  by 
  native 
  paths 
  through 
  

   high 
  weeds. 
  At 
  each 
  of 
  two 
  of 
  its 
  corners 
  a 
  hut, 
  at 
  the 
  third 
  two. 
  A 
  diminutive 
  

   and 
  dirty 
  open 
  space 
  before 
  each 
  hut 
  and 
  a 
  shade-tree 
  at 
  two 
  of 
  them. 
  The 
  general 
  

   thorn 
  forest 
  — 
  mgongwa 
  and 
  mhali 
  acacias, 
  with 
  some 
  Albizzia 
  hypoleuca 
  and 
  much 
  

   Commiphora 
  thicket 
  — 
  extending 
  right 
  up 
  to 
  two 
  sides 
  of 
  the 
  triangle. 
  The 
  third 
  

   side 
  abutting 
  on 
  a 
  limited 
  open 
  space 
  of 
  grass 
  and 
  weeds 
  representing 
  old 
  cultivation, 
  

   itself 
  surrounded 
  by 
  the 
  bush. 
  A 
  path 
  leading 
  through 
  this 
  and 
  then 
  through 
  

   mgongwa-with-thicket 
  wooding, 
  past 
  a 
  granite 
  kopje, 
  in 
  which 
  we 
  found 
  puparia, 
  

   to 
  a 
  water-hole 
  in 
  the 
  bush. 
  Another 
  bush-path 
  leading 
  to 
  the 
  main 
  piece 
  of 
  

   cultivation 
  some 
  distance 
  off 
  in 
  the 
  bush 
  in 
  another 
  direction. 
  

  

  Fly 
  fairly 
  abundant 
  in 
  the 
  thorn-bush 
  near, 
  but 
  less 
  so 
  than 
  in 
  the 
  village. 
  Here 
  

   it 
  seemed 
  concentrated 
  and 
  greatly 
  at 
  home. 
  An 
  old 
  woman 
  who 
  appeared 
  was 
  

   accompanied 
  in 
  all 
  her 
  movements 
  and 
  domestic 
  duties 
  by 
  tsetses 
  of 
  which 
  she 
  took 
  

   little 
  notice. 
  A 
  dozen 
  or 
  more 
  at 
  a 
  time 
  would 
  be 
  perched 
  on 
  her 
  leather 
  garments 
  

   and 
  her 
  skin. 
  A 
  number 
  followed 
  her 
  into 
  her 
  hut 
  and 
  remained 
  there. 
  One 
  of 
  my 
  

   fly-boys 
  went 
  in 
  and 
  captured 
  six. 
  About 
  and 
  between 
  the 
  huts 
  we 
  were 
  much 
  

   attended, 
  and 
  a 
  few 
  fed 
  successfully. 
  Unfortunately 
  it 
  did 
  not 
  at 
  once 
  strike 
  me 
  

   to 
  keep 
  this 
  catch 
  separate 
  or 
  count 
  the 
  flies, 
  but, 
  out 
  of 
  five 
  boys, 
  one 
  that 
  counted 
  

   from 
  the 
  start 
  captured 
  35, 
  and 
  from 
  the 
  very 
  late 
  moment 
  at 
  which 
  I 
  ordered 
  a 
  

   separate 
  catch, 
  over 
  70 
  were 
  taken. 
  The 
  total 
  will 
  not 
  have 
  been 
  less 
  than 
  200. 
  

   A 
  few 
  Haematopota 
  and 
  Tabanus 
  were 
  present 
  also. 
  

  

  One 
  of 
  the 
  solitary 
  huts 
  was 
  deserted. 
  The 
  woman 
  had 
  died 
  of 
  sleeping 
  sickness 
  

   and 
  her 
  husband, 
  the 
  headman, 
  had 
  gone 
  ; 
  apparently 
  it 
  was 
  not 
  known 
  whither, 
  

   or 
  whether 
  he 
  was 
  infected. 
  Of 
  the 
  four 
  remaining 
  inhabitants 
  one 
  man 
  still 
  well 
  

   was 
  away 
  accompanying 
  one 
  of 
  the 
  others, 
  a 
  young 
  man 
  with 
  sleeping 
  sickness, 
  to 
  

   Dr. 
  Maclean's 
  nearest 
  hospital 
  ; 
  the 
  old 
  woman 
  has 
  been 
  mentioned, 
  and 
  a 
  younger 
  

   woman 
  " 
  had 
  been 
  ill 
  with 
  malali 
  but 
  was 
  now 
  better, 
  and 
  had 
  gone 
  some 
  days 
  

   before 
  to 
  visit 
  in 
  Igombe." 
  I 
  found 
  her 
  bed 
  had 
  just 
  been 
  slept 
  in 
  — 
  a 
  probable 
  case 
  

   of 
  concealment. 
  

  

  There 
  is 
  only 
  one 
  thing 
  to 
  be 
  done 
  with 
  the 
  inhabitants 
  of 
  a 
  village 
  of 
  this 
  kind. 
  

   They 
  are 
  attended 
  in 
  every 
  occupation 
  of 
  the 
  day 
  by 
  tsetses 
  — 
  in 
  their 
  village, 
  inside 
  

   their 
  huts, 
  going 
  to 
  water 
  and 
  hoeing 
  their 
  fields. 
  Let 
  one 
  of 
  them 
  become 
  infected, 
  

  

  