﻿104 
  

  

  doubt, 
  perfbrras 
  the 
  functions 
  of 
  puch 
  an 
  artery 
  by 
  abstract- 
  

   ing 
  the 
  food-material 
  from 
  the 
  yolk 
  in 
  passing 
  over 
  it 
  ; 
  the 
  

   food-materials 
  undoubtedly 
  being 
  drawn 
  for 
  this 
  purpose, 
  by 
  

   osmosis 
  from 
  cell 
  to 
  cell, 
  into 
  the 
  upper 
  portion 
  of 
  the 
  yolk, 
  

   and 
  in 
  contact 
  with 
  the 
  vessel. 
  The 
  unimpregnated 
  ova*, 
  are 
  

   not 
  by 
  any 
  means 
  tiie 
  only 
  ones 
  which 
  disintegrate 
  and 
  die. 
  

   Too 
  many, 
  by 
  far, 
  of 
  the 
  impregnated 
  ova 
  are 
  guilty 
  of 
  the 
  

   t^ame 
  performance, 
  and 
  exhibit 
  in 
  their 
  disintegration 
  all 
  

   those 
  curious 
  irregular 
  phases, 
  one 
  of 
  which 
  is 
  represented 
  in 
  

   Fig. 
  10, 
  PI. 
  VI. 
  Sometimes, 
  instead 
  of 
  there 
  being 
  a 
  great 
  

   many 
  ball-like 
  protrusions, 
  there 
  is 
  a 
  single 
  round 
  ball, 
  

   nearly 
  as 
  large 
  as 
  the 
  vitellus 
  ; 
  the 
  vitellus 
  and 
  the 
  ball 
  

   looking 
  very 
  much 
  like 
  the 
  two 
  ends 
  of 
  a 
  large 
  dumb-bell, 
  

   without 
  any 
  connecting 
  handle. 
  Oftentimes, 
  after 
  the 
  

   embryo 
  has 
  progressed 
  quite 
  a 
  little 
  in 
  its 
  development, 
  one 
  

   or 
  both 
  ends 
  will 
  turn 
  opaque, 
  and 
  gradually 
  disintegrate. 
  

   Sometimes 
  ball-like 
  protrusions 
  proceed 
  from 
  the 
  disintegra- 
  

   ting 
  portions, 
  sometimes 
  the 
  disintegrating 
  portions 
  form 
  

   floculent 
  masses, 
  floating 
  out 
  from 
  the 
  vitellus 
  towards 
  tlie 
  

   vitelline 
  membrane. 
  

  

  I 
  have 
  said 
  that 
  at 
  Carrot 
  cove, 
  in 
  the 
  Chesapeake 
  bay, 
  the 
  

   spawn 
  was 
  often 
  brought 
  for 
  three 
  or 
  four 
  miles 
  across 
  the 
  bay, 
  

   and 
  often 
  over 
  very 
  rough 
  water. 
  The 
  rolling 
  and 
  pitching 
  

   of 
  the 
  boat 
  upon 
  the 
  waves, 
  and 
  the 
  consequent 
  knocking 
  

   together 
  of 
  the 
  ova, 
  without 
  doubt, 
  had 
  a 
  very 
  injurious 
  

   effect 
  upon 
  them. 
  If 
  the 
  ova 
  in 
  the 
  boxes 
  are 
  subjected 
  to 
  a 
  

   severe 
  storm, 
  or 
  if 
  the 
  ova 
  are 
  roughly 
  pressed 
  upon, 
  in 
  

   manipulating 
  them, 
  the 
  loss 
  is 
  much 
  greater 
  than 
  with 
  ova 
  

   treated 
  very 
  gently, 
  and 
  kept 
  in 
  a 
  steady, 
  yet 
  not 
  violent, 
  

   current 
  of 
  water, 
  away 
  from 
  the 
  reach 
  of 
  boisterous 
  waves 
  and 
  

   severe 
  rains. 
  

  

  If 
  rough 
  handling 
  and 
  severe 
  peltings 
  will 
  injure 
  the 
  ova, 
  

   why 
  will 
  not 
  rolling 
  and 
  tumbling 
  in 
  a 
  boat 
  over 
  a 
  stormy 
  

   sea? 
  It 
  is 
  very 
  possible, 
  if 
  not 
  highly 
  probable, 
  that 
  this 
  

   cartage 
  in 
  boats, 
  particularly 
  in 
  rough 
  water, 
  may 
  be 
  the 
  

   chief 
  cause 
  of 
  this 
  disintegration 
  in 
  the 
  advanced 
  as 
  well 
  as 
  

  

  