﻿110 
  RUPERT 
  W. 
  JACK 
  — 
  TSETSE 
  FLY 
  AND 
  BIG 
  GAME 
  IN 
  S. 
  RHODESIA. 
  

  

  A 
  few 
  words 
  are 
  necessary 
  in 
  connexion 
  with 
  the 
  maps 
  attached 
  to 
  the 
  article. 
  

   It 
  should 
  be 
  noted 
  that 
  the 
  maps 
  of 
  certain 
  of 
  the 
  more 
  remote 
  districts 
  of 
  the 
  

   territory 
  have 
  been 
  compiled 
  from 
  sketches 
  alone, 
  and 
  that 
  in 
  the 
  Sebungwe 
  district 
  

   there 
  is 
  not 
  a 
  single 
  fixed 
  point 
  to 
  act 
  as 
  a 
  base. 
  This 
  explains 
  the 
  discrepancies 
  

   in 
  recent 
  maps 
  of 
  this 
  district 
  which 
  have 
  been 
  attached 
  to 
  reports. 
  The 
  map 
  has 
  

   been 
  constantly 
  in 
  a 
  process 
  of 
  correction 
  and 
  is 
  still 
  far 
  from 
  accurate. 
  During 
  a 
  

   recent 
  expedition 
  to 
  the 
  district 
  the 
  writer 
  devoted 
  what 
  available 
  time 
  he 
  had 
  to 
  

   corrrecting 
  distances 
  and 
  directions, 
  and 
  took 
  a 
  large 
  number 
  of 
  angles 
  with 
  a 
  theo- 
  

   dolite. 
  It 
  was, 
  however, 
  found 
  impossible 
  in 
  the 
  circumstances 
  to 
  connect 
  these 
  

   with 
  any 
  fixed 
  points, 
  and 
  as 
  a 
  consequence 
  the 
  map 
  of 
  the 
  district 
  (Map 
  II), 
  although 
  

   believed 
  to 
  be 
  a 
  considerable 
  improvement 
  on 
  previous 
  sketches, 
  is 
  patchy, 
  the 
  old 
  

   map 
  having 
  to 
  be 
  altered 
  to 
  fit 
  in 
  with 
  the 
  new, 
  and 
  certainly 
  contains 
  many 
  in- 
  

   accuracies. 
  The 
  map 
  of 
  the 
  district 
  as 
  shown 
  in 
  Map 
  I 
  is 
  drawn 
  from 
  the 
  older 
  

   sketches 
  and 
  the 
  errors 
  are 
  still 
  greater. 
  

  

  It 
  should 
  also 
  be 
  borne 
  in 
  mind 
  that 
  maps 
  of 
  the 
  distribution 
  of 
  fly 
  cannot 
  be 
  made 
  

   very 
  accurate. 
  During 
  the 
  latter 
  part 
  of 
  the 
  dry 
  season 
  tsetse 
  is 
  only 
  met 
  with 
  along 
  

   the 
  shady 
  banks 
  of 
  watercourses 
  and 
  vleis, 
  but 
  during 
  the 
  rains 
  it 
  spreads 
  for 
  several 
  

   miles 
  through 
  the 
  surrounding 
  bush. 
  Most 
  of 
  the 
  mapping 
  is 
  done 
  in 
  the 
  dry 
  season, 
  

   and 
  a 
  difference 
  of 
  a 
  few 
  miles 
  is 
  quite 
  noticeable 
  in 
  a 
  map 
  drawn 
  to 
  the 
  scale 
  of 
  five 
  

   miles 
  to 
  one 
  inch. 
  Again, 
  the 
  "following 
  distance" 
  of 
  the 
  fly 
  is 
  probably 
  not 
  far 
  

   short 
  of 
  ten 
  miles, 
  and 
  may 
  be 
  more 
  in 
  extreme 
  cases, 
  and 
  this 
  obviously 
  introduces 
  

   another 
  element 
  of 
  inexactitude. 
  It 
  is 
  quite 
  impossible 
  to 
  obtain 
  an 
  approximate 
  

   delimitation 
  of 
  a 
  belt 
  by 
  working 
  from 
  within. 
  In 
  such 
  circumstances 
  it 
  is 
  necessary 
  

   to 
  proceed 
  further 
  until 
  clear 
  of 
  the 
  fly 
  and 
  later 
  to 
  strike 
  back 
  until 
  it 
  is 
  encountered 
  

   again, 
  and 
  at 
  least 
  a 
  day 
  should 
  elapse 
  before 
  this 
  is 
  done. 
  Finally, 
  whilst 
  the 
  limits 
  

   of 
  a 
  belt 
  along 
  a 
  river 
  are 
  never 
  definable 
  within 
  a 
  mile 
  or 
  two, 
  if 
  natives 
  are 
  con- 
  

   stantly 
  passing 
  up 
  and 
  down 
  the 
  limits 
  are 
  still 
  more 
  elastic, 
  and 
  fly, 
  having 
  been 
  

   carried 
  by 
  natives, 
  may 
  be 
  encountered 
  one 
  day 
  6 
  to 
  7 
  miles 
  beyond 
  the 
  point 
  where 
  

   a 
  visit 
  the 
  next 
  day 
  would 
  place 
  the 
  border. 
  These 
  remarks 
  seem 
  necessary 
  

   because 
  the 
  early 
  hunters 
  have 
  insisted 
  so 
  strongly 
  upon 
  the 
  sharp 
  delimitation 
  

   of 
  fly-belts. 
  Areas 
  infested 
  with 
  G. 
  morsitans 
  are 
  only 
  sharply 
  delimited 
  in 
  the 
  writer's 
  

   experience 
  roughly 
  between 
  July 
  and 
  December, 
  when 
  the 
  fly 
  is 
  confined 
  to 
  the 
  shade 
  

   along 
  rivers 
  (dry 
  or 
  otherwise) 
  and 
  vleis, 
  and 
  even 
  then 
  the 
  boundaries 
  along 
  the 
  rivers 
  

   are 
  somewhat 
  elastic. 
  When 
  the 
  bulk 
  of 
  the 
  bush 
  is 
  shady 
  they 
  shew 
  no 
  preference 
  

   for 
  their 
  dry 
  season 
  haunts, 
  occurring 
  freely 
  in 
  the 
  surrounding 
  mopani 
  belts 
  and 
  

   *' 
  gusu 
  " 
  bush, 
  that 
  is, 
  open 
  forest 
  consisting 
  usually 
  of 
  species 
  of 
  Brachystegia 
  with 
  

   little 
  or 
  no 
  undergrowth. 
  

  

  