﻿236 
  THE 
  ZOOLOGIST. 
  

  

  returned 
  ; 
  he 
  passed 
  to 
  back 
  of 
  bunch 
  and 
  started 
  away, 
  others 
  follow- 
  

   ing 
  ; 
  8.43, 
  all 
  in 
  line. 
  

  

  " 
  4. 
  Ten 
  in 
  line. 
  8.31, 
  leader 
  removed, 
  and 
  all 
  bunched 
  one 
  inch 
  

   back 
  of 
  line 
  ; 
  8.3G, 
  leader 
  returned 
  ; 
  8.55, 
  leader 
  starts, 
  and 
  others 
  

   follow. 
  

  

  "5. 
  8.57, 
  leader 
  removed 
  and 
  put 
  back 
  at 
  once, 
  seventh 
  in 
  the 
  

   line 
  ; 
  all 
  bunched 
  ; 
  4.06 
  p.m., 
  leader 
  started, 
  others 
  following. 
  

  

  "6. 
  8.16, 
  leader 
  removed; 
  8.26, 
  leader 
  returned; 
  8.31, 
  leader 
  

   started, 
  otbers 
  following. 
  

  

  " 
  7. 
  8.21, 
  leader 
  removed 
  ; 
  a 
  caterpillar, 
  the 
  next 
  in 
  line, 
  goes 
  on 
  

   half 
  an 
  incb, 
  and 
  here 
  they 
  all 
  bunch 
  ; 
  8.30, 
  leader 
  returned 
  ; 
  8.42, 
  

   leader 
  starts, 
  and 
  others 
  follow. 
  

  

  " 
  8. 
  2.32, 
  leader 
  removed 
  ; 
  2.47, 
  leader 
  returned 
  to 
  bunch 
  ; 
  3.55, 
  

   leader 
  started, 
  others 
  following. 
  

  

  " 
  9. 
  One 
  hundred 
  and 
  fifty 
  inline. 
  10.22, 
  leader 
  removed 
  ; 
  10.40, 
  

   bunched, 
  and 
  leader 
  returned 
  ; 
  11.25, 
  leader 
  started, 
  and 
  others 
  

   followed. 
  

  

  " 
  The 
  following 
  are 
  experiments 
  where 
  a 
  new 
  leader 
  started 
  : 
  — 
  

  

  "1. 
  Forty 
  in 
  line. 
  Leader 
  removed 
  ; 
  9.10, 
  bunched 
  ; 
  9.11, 
  a 
  cater- 
  

   pillar 
  at 
  back 
  of 
  bunch 
  starts, 
  and 
  others 
  follow. 
  

  

  "2. 
  Twenty-one 
  in 
  line. 
  9.01, 
  leader 
  removed; 
  9.08, 
  bunched; 
  

   9.10, 
  one 
  near 
  front 
  starts 
  ; 
  9.21, 
  all 
  in 
  line, 
  following 
  new 
  leader. 
  

  

  " 
  3. 
  Eighteen 
  in 
  line. 
  8.50, 
  leader 
  removed 
  ; 
  in 
  a 
  minute 
  the 
  

   next 
  caterpillar 
  turned 
  and 
  started 
  ; 
  8.55, 
  all 
  in 
  line, 
  and 
  following 
  

   new 
  leader. 
  

  

  "4. 
  Thirty-six 
  in 
  line. 
  8.42, 
  leader 
  removed, 
  and 
  the 
  next 
  cater- 
  

   pillar 
  assumes 
  leadership 
  ; 
  8.47, 
  new 
  leader 
  removed, 
  and 
  original 
  one 
  

   put 
  back 
  in 
  middle 
  of 
  line 
  ; 
  all 
  bunch 
  ; 
  and 
  at 
  4.08 
  p.m. 
  were 
  still 
  

   quiet. 
  

  

  " 
  5. 
  Eighteen 
  in 
  line. 
  8.30, 
  leader 
  removed; 
  8.37, 
  bunched 
  ; 
  one 
  

   went 
  a 
  short 
  distance 
  over 
  the 
  line, 
  but 
  returned 
  ; 
  leader 
  returned 
  ; 
  

   8.46, 
  new 
  leader 
  started, 
  and 
  others 
  follow. 
  

  

  " 
  6. 
  Eleven 
  in 
  line. 
  8.38, 
  leader 
  removed; 
  8.41, 
  next 
  caterpillar 
  

   returned 
  along 
  the 
  line 
  two 
  inches, 
  and 
  tben 
  came 
  back 
  ; 
  others 
  

   bunched 
  ; 
  8.45, 
  start 
  with 
  new 
  leader. 
  

  

  "7. 
  Ten 
  in 
  line. 
  10.34, 
  leader 
  removed; 
  line 
  kept 
  on; 
  10.39, 
  

   second 
  leader 
  removed 
  ; 
  march 
  continued 
  ; 
  10.40, 
  third 
  leader 
  re- 
  

   moved 
  ; 
  10.42, 
  bunched 
  ; 
  10.48, 
  started 
  with 
  the 
  original 
  leader, 
  who 
  

   had 
  been 
  returned, 
  at 
  head. 
  

  

  "8. 
  8.13, 
  leader 
  removed 
  ; 
  8.22, 
  leader 
  returned 
  ; 
  8.56, 
  new 
  leader 
  

   started, 
  others 
  following. 
  

  

  