﻿The 
  Anatomy 
  of 
  the 
  Female 
  Genital 
  Tract 
  of 
  the 
  Papipara 
  etc. 
  31 
  

  

  ( 
  fol.5 
  and/b/,7 
  clo 
  not 
  dirfer 
  iu 
  size. 
  their 
  lengths 
  being 
  0.0S 
  min 
  and 
  

   0.06 
  mm 
  respectively. 
  which 
  is 
  very 
  nearly 
  the 
  saine 
  as 
  tlie 
  lengths 
  

   of 
  the 
  smallest 
  follicles 
  in 
  the 
  opposite 
  ovary. 
  The 
  matare 
  ovura 
  

   measures 
  1,2 
  mm 
  in 
  length 
  and 
  0.30 
  mm 
  in 
  width; 
  it 
  occupies 
  almost 
  

   the 
  entire 
  space 
  within 
  the 
  peritoneal 
  sac. 
  and 
  impresses 
  its 
  shape 
  

   npon 
  it. 
  the 
  follicles 
  containing 
  the 
  other 
  three 
  ova 
  being 
  exceedingly 
  

   small 
  and 
  beiug 
  crowded 
  into 
  a 
  narrow 
  space 
  at 
  the 
  distal 
  end 
  of 
  

   the 
  ovary. 
  The 
  lower 
  or 
  proximal 
  end 
  of 
  the 
  ripe 
  ovum 
  crowds 
  the 
  

   oviduct. 
  partly 
  obliterating 
  it. 
  

  

  When. 
  now. 
  the 
  ripe 
  OTum 
  is 
  extrnded. 
  the 
  ovary 
  at 
  once 
  shrinks 
  

   by 
  the 
  contraction 
  of 
  the 
  rnnscles-fibres 
  in 
  the 
  peritoneal 
  sac 
  to 
  a 
  

   very 
  small 
  size 
  and 
  the 
  follicular 
  epithelium, 
  which 
  had 
  surronnded 
  

   it. 
  and 
  the 
  remains 
  of 
  its 
  nutritive 
  cells 
  disintegrate. 
  The 
  ovary 
  

   becomes 
  about 
  0.64 
  mm 
  long 
  and 
  0.24 
  mm 
  wide. 
  Its 
  shape 
  also 
  

   ehanges: 
  when 
  it 
  contains 
  the 
  ripe 
  ovum 
  it 
  has 
  almost 
  its 
  exact 
  shape 
  

   and 
  size 
  ; 
  after 
  the 
  ovnm 
  is 
  extrnded 
  it 
  becomes 
  an 
  elongated 
  

   structure. 
  slightly 
  largei 
  toward 
  the 
  proximal 
  end 
  PI. 
  II 
  Fig. 
  2. 
  ov. 
  

   and 
  Fig. 
  12). 
  The 
  walls 
  of 
  the 
  peritoneal 
  sac 
  hang 
  loose 
  about 
  the 
  

   ovarioles 
  Fig. 
  12). 
  The 
  separate 
  peritoneal 
  coverings 
  of 
  the 
  ovarioles 
  

   also 
  hang 
  loose 
  about 
  thern 
  and 
  project 
  from 
  their 
  lower 
  ends 
  towards 
  

   the 
  oviducts 
  and 
  oi'ten 
  eontain 
  scattered 
  epithelial 
  cells. 
  the 
  disinte- 
  

   grated 
  remains 
  of 
  the 
  last 
  matare 
  follicle 
  PI. 
  III. 
  Fig. 
  12, 
  dis.fol.cc 
  . 
  

  

  The 
  duty 
  of 
  farnishing 
  the 
  next 
  ovum 
  now 
  shiffes 
  to 
  the 
  opposite 
  

   ovary. 
  which. 
  of 
  conrse. 
  is 
  now 
  the 
  larger 
  of 
  the 
  two: 
  it 
  is 
  a 
  piriform 
  

   structure 
  and 
  measures 
  0,9 
  mm 
  by 
  0.5 
  mm. 
  It 
  is 
  at 
  this 
  time 
  that 
  

   the 
  two 
  ovaries 
  are 
  the 
  smallest 
  in 
  absolute 
  size, 
  and 
  also 
  that 
  the 
  

   youngest 
  embryo 
  is 
  present 
  in 
  the 
  uterus. 
  As 
  the 
  growth 
  of 
  the 
  

   embryo 
  and 
  the 
  larva 
  proceeds 
  the 
  two 
  ovaries 
  are 
  constantly 
  

   increasing 
  in 
  size. 
  until 
  finally 
  when 
  the 
  larva 
  has 
  attained 
  its 
  

   maximum 
  size 
  and 
  is 
  ready 
  to 
  be 
  born. 
  the 
  largest 
  ovum 
  in 
  the 
  

   largest 
  ovary 
  has 
  again 
  attained 
  füll 
  size 
  and 
  is 
  leady 
  to 
  be 
  extrnded. 
  

   It 
  is 
  at 
  this 
  time 
  that 
  the 
  two 
  ovaries 
  have 
  attained 
  their 
  maximum 
  size. 
  

   The 
  larva 
  in 
  the 
  uterus 
  is 
  then 
  born 
  and 
  that 
  organ 
  being 
  emptied. 
  

   soon 
  afterward 
  the 
  ripe 
  ovum 
  passes 
  in 
  its 
  turn 
  from 
  the 
  ovary 
  

   throngh 
  the 
  receptaculum 
  siminis. 
  where 
  it 
  is 
  fertilized. 
  into 
  the 
  uterus. 
  

  

  Histology 
  of 
  the 
  ovary. 
  Peritoneal 
  covering. 
  This 
  is 
  

   composed 
  of 
  two 
  distinct 
  tissues, 
  a] 
  a 
  layer 
  of 
  striped. 
  branched 
  

   and 
  anastomosing 
  muscle-fibres 
  amoug 
  which 
  are 
  a 
  small 
  number 
  of 
  

   connective-tissue 
  flbres. 
  which 
  form 
  the 
  outer 
  portion 
  of 
  the 
  peritoneal 
  

   sac. 
  and 
  b 
  a 
  layer 
  of 
  branched 
  and 
  anastomosing 
  connective-tissue 
  

  

  