﻿XXIV 
  

  

  the 
  eggs, 
  when 
  first 
  spawned, 
  to 
  be 
  of 
  a 
  pale-green 
  color, 
  

   slightly 
  larger 
  than 
  those 
  of 
  herring 
  ; 
  but 
  becoming, 
  after 
  im- 
  

   pregnation, 
  somewhat 
  larger 
  than 
  shad 
  eggs, 
  and 
  losing 
  their 
  

   color 
  and 
  opaqueness, 
  being 
  transparent 
  and 
  almost 
  invisible, 
  

   an 
  oily 
  globule 
  alone 
  arresting 
  the 
  attention. 
  

  

  They 
  were 
  placed 
  in 
  the 
  hatching 
  vessels; 
  some 
  in 
  the 
  cyl- 
  

   inders 
  used 
  for 
  shad-hatching, 
  some 
  in 
  the 
  cones 
  and 
  others 
  

   in 
  floating 
  boxes. 
  While 
  the 
  eggs 
  were 
  being 
  rinsed 
  and 
  

   manipulated, 
  many 
  hundreds 
  of 
  thousands 
  of 
  them 
  were 
  

   poured 
  overboard 
  at 
  the 
  wharf 
  to 
  which 
  the 
  steamer 
  was 
  

   moored. 
  Quite 
  a 
  large 
  number 
  of 
  them, 
  however, 
  apparently 
  

   in 
  good 
  condition, 
  were 
  placed 
  in 
  the 
  hatching 
  vessels 
  about 
  

   midnight 
  on 
  the 
  sixth. 
  The 
  following 
  table 
  shows 
  the 
  tem- 
  

   perature 
  of 
  the 
  air 
  and 
  water 
  during 
  the 
  period 
  covered 
  by 
  

   the 
  hatching 
  of 
  these 
  eggs 
  : 
  

  

  DATE. 
  

  

  Temperature 
  op 
  

  

  6 
  A. 
  M. 
  

  

  May 
  6 
  68 
  

  

  May 
  7 
  | 
  GS 
  

  

  May 
  8 
  56 
  

  

  May 
  9 
  ' 
  56 
  

  

  65 
  

   07 
  

   63 
  

   64 
  

  

  65 
  

   67 
  

   64 
  

   63 
  

  

  65 
  

   66 
  

   63 
  

   63 
  

  

  Temperature 
  op 
  

  

  82 
  

   61 
  

   67 
  

   67i 
  

  

  13 
  M. 
  

  

  71 
  

   67 
  

   66 
  

  

  69 
  

   67 
  

   65 
  

  

  Temperature 
  op 
  

  

  66 
  : 
  60 
  

  

  64i' 
  63 
  

  

  i 
  

  

  63 
  1 
  63 
  ' 
  65 
  ' 
  60 
  

  

  ^ 
  

  

  6 
  P. 
  M. 
  

  

  69 
  69 
  71 
  70 
  

  

  68 
  I 
  67 
  

   64i 
  64 
  

   64 
  64 
  

  

  70 
  

   67 
  

   64 
  

   64 
  

  

  