﻿418 
  K. 
  T. 
  Young, 
  Eeproductive 
  organs 
  of 
  Taenia 
  pisiformis. 
  

  

  Fig. 
  66. 
  Anaphase 
  of 
  abortive 
  second 
  maturation. 
  The 
  spindle 
  axis 
  

   runs 
  from 
  right 
  to 
  left. 
  

  

  Fig. 
  67. 
  Side 
  view 
  of 
  spindle 
  showing 
  one 
  chromosome 
  dividing 
  

   at 
  a 
  and 
  a 
  dividing 
  pair 
  at 
  h 
  and 
  h^. 
  z 
  mid-body. 
  

  

  Fig. 
  68. 
  A 
  double 
  aster 
  a^ 
  and 
  two 
  chromosomes 
  c^ 
  are 
  here 
  shown. 
  

  

  Fig. 
  69. 
  Equatorial 
  plate 
  of 
  maturation 
  mitosis 
  showing 
  eight 
  chro- 
  

   mosomes, 
  two 
  of 
  these 
  united 
  at 
  x. 
  

  

  Fig. 
  70. 
  Idem 
  , 
  showing 
  ten 
  chromosomes 
  , 
  one 
  of 
  which 
  ./• 
  is 
  not 
  

   in 
  clear 
  focus. 
  

  

  Fig. 
  71. 
  Side 
  view 
  of 
  maturation 
  spindle, 
  showing 
  linear 
  aster. 
  

  

  Fig. 
  72. 
  $ 
  pronucleus 
  passing 
  into 
  the 
  resting 
  condition. 
  

  

  Fig. 
  73. 
  Egg 
  with 
  attached 
  yolk 
  cell, 
  maturation 
  spindle 
  in 
  side 
  view. 
  

  

  Fig. 
  74. 
  Egg 
  with 
  two 
  attached 
  yolk 
  cells. 
  Three 
  chromosomes 
  of 
  

   maturation 
  spindle 
  in 
  side 
  view. 
  

  

  Fig. 
  75. 
  Yolk 
  cell 
  lying 
  free 
  in 
  uterus. 
  

  

  Fig. 
  76. 
  Yolk 
  mass 
  in 
  yolk 
  cell. 
  

  

  Fig. 
  77. 
  Yolk 
  cell 
  attached 
  to 
  advanced 
  embryo. 
  

  

  Fig. 
  78 
  and 
  79. 
  Yolk 
  cells 
  attached 
  to 
  apparently 
  unmatured 
  

   eggs 
  in 
  uterus. 
  

  

  Figs. 
  80 
  and 
  81. 
  Extrusion 
  of 
  chromidia 
  from 
  matured 
  eggs. 
  

  

  Fig. 
  82. 
  Endogenous 
  cleavage, 
  a 
  cleavage 
  nucleus 
  at 
  x, 
  others 
  

   showing 
  as 
  dark 
  masses 
  out 
  of 
  focus. 
  

  

  Figs. 
  83 
  and 
  84. 
  Sperm 
  entrance. 
  

  

  Figs. 
  85 
  and 
  86. 
  Approach 
  of 
  pronuclei. 
  

  

  Fig. 
  87. 
  Fusion 
  of 
  pronuclei. 
  

  

  Figs. 
  88 
  and 
  89. 
  Amitotic 
  cleavage. 
  

  

  Figs. 
  90 
  and 
  91. 
  Precocious 
  cleavage. 
  

  

  