﻿414 
  

  

  Dr. 
  D. 
  Ferrier 
  on 
  the 
  Brain 
  of 
  Monkeys. 
  

  

  IV. 
  Not 
  explored. 
  

  

  V. 
  Similar 
  action 
  of 
  the 
  leg, 
  but 
  at 
  the 
  same 
  time 
  the 
  right 
  arm 
  

  

  was 
  retracted. 
  (This 
  action 
  of 
  the 
  arm 
  will 
  receive 
  explanation 
  

   below.) 
  The 
  tail 
  was 
  not 
  observed. 
  

  

  VI. 
  Not 
  explored. 
  

  

  VII. 
  Movements 
  of 
  the 
  right 
  hind 
  leg 
  as 
  before, 
  and 
  also 
  of 
  the 
  tail. 
  

   The 
  movement 
  of 
  the 
  tail 
  was 
  not 
  noted 
  as 
  being 
  of 
  a 
  definite 
  

   character, 
  nor 
  whether 
  it 
  was 
  moved 
  to 
  the 
  right 
  or 
  left. 
  

  

  VIII. 
  The 
  same 
  as 
  VII. 
  

  

  IX. 
  Also 
  the 
  same 
  as 
  VII. 
  

  

  X. 
  Not 
  explored. 
  

  

  XI. 
  Gave 
  the 
  results 
  described 
  under 
  VII. 
  

  

  XII. 
  Not 
  explored. 
  

  

  XIII. 
  Not 
  explored. 
  

  

  The 
  general 
  result 
  of 
  these 
  observations, 
  all 
  agreeing 
  with 
  each 
  other 
  

   in 
  essential 
  respects, 
  is 
  to 
  show 
  that 
  circle 
  (J) 
  * 
  s 
  a 
  centre 
  for 
  the 
  hind 
  

  

  leg 
  of 
  a 
  different 
  character 
  from 
  circle 
  (^)? 
  being 
  more 
  concerned 
  in 
  

  

  the 
  action 
  of 
  the 
  hind 
  leg 
  as 
  an 
  organ 
  of 
  prehension 
  or 
  climbing, 
  instead 
  

  

  of 
  being 
  an 
  organ 
  of 
  simple 
  progression. 
  The 
  subdivision 
  circle 
  (j^) 
  

  

  seems 
  to 
  be 
  a 
  centre 
  for 
  the 
  tail. 
  As 
  I 
  have 
  not 
  had 
  an 
  opportunity 
  of 
  

   experimenting 
  on 
  monkeys 
  with 
  prehensile 
  tails, 
  I 
  am 
  unable 
  to 
  indicate 
  

   further 
  the 
  special 
  action 
  of 
  this 
  centre 
  in 
  regard 
  to 
  it. 
  

  

  Circle 
  (J)? 
  % 
  s 
  - 
  1 
  & 
  2, 
  embracing 
  a 
  portion 
  both 
  of 
  the 
  ascending 
  

  

  frontal 
  and 
  of 
  the 
  ascending 
  parietal 
  convolution, 
  extending 
  from 
  the 
  

   lower 
  border 
  of 
  the 
  parallel 
  sulcus, 
  already 
  alluded 
  to, 
  to 
  the 
  anterior 
  

  

  boundary 
  of 
  circle 
  ( 
  1 
  

  

  I. 
  Not 
  explored 
  definitely. 
  

  

  II. 
  The 
  left 
  humerus 
  is 
  adducted, 
  the 
  hand 
  pronated, 
  the 
  whole 
  arm 
  

  

  straightened 
  out 
  and 
  drawn 
  backwards. 
  

  

  The 
  action 
  is 
  such 
  as 
  is 
  attributed 
  to 
  the 
  latissimus 
  dorsi, 
  viz. 
  a 
  

   sort 
  of 
  swimming-action 
  of 
  the 
  arm, 
  with 
  the 
  palm 
  of 
  the 
  hand 
  

   directed 
  backwards. 
  

  

  III. 
  A 
  similar 
  extension 
  and 
  retraction 
  backwards 
  of 
  the 
  right 
  arm. 
  

  

  IV. 
  Eetraction 
  of 
  the 
  right 
  arm, 
  with 
  the 
  hand 
  as 
  already 
  described. 
  

  

  V. 
  Action 
  as 
  before 
  of 
  the 
  latissimus 
  dorsi, 
  but 
  at 
  the 
  same 
  time 
  also 
  

  

  the 
  right 
  hind 
  leg 
  is 
  acted 
  on 
  as 
  if 
  by 
  stimulation 
  of 
  circle 
  (^). 
  

   In 
  this 
  case 
  also 
  the 
  hand 
  was 
  firmly 
  clenched. 
  

  

  