﻿MANUAL 
  OF 
  FISH-CULTURE. 
  45 
  

  

  fish 
  are 
  laid 
  for 
  measurement. 
  At 
  the 
  trout 
  is 
  a 
  narrow 
  table, 
  on 
  ■which 
  

   the 
  eggs 
  are 
  washed; 
  aud 
  at 
  the 
  rear 
  the 
  entire 
  side 
  of 
  the 
  room 
  is 
  

   occupied 
  by 
  a 
  series 
  of 
  shelves, 
  on 
  which 
  the 
  eggs 
  are 
  placed 
  after 
  

   fecundation 
  and 
  washing. 
  

  

  The 
  spawn 
  taker, 
  clad 
  in 
  waterproof 
  clothing 
  and 
  wearing 
  woolen 
  

   mittens, 
  sits 
  on 
  a 
  stool 
  or 
  box, 
  and 
  on 
  a 
  box 
  in 
  front 
  of 
  him 
  is 
  a 
  clean 
  

   tin 
  pan 
  holding 
  about 
  10 
  quarts, 
  which 
  has 
  been 
  rinsed 
  and 
  emptied 
  

   but 
  not 
  wiped 
  out. 
  A 
  female 
  salmon 
  is 
  dipped 
  up 
  from 
  one 
  of 
  the 
  

   floating 
  pens 
  and 
  brought 
  to 
  the 
  operator, 
  who 
  seizes 
  her 
  by 
  the 
  tail 
  

   with 
  the 
  right 
  hand 
  and 
  holds 
  her 
  up, 
  head 
  downward. 
  If 
  unripe, 
  the 
  

   fish 
  is 
  returned 
  to 
  the 
  pens; 
  if 
  ripe, 
  the 
  spawn 
  will 
  be 
  loose 
  and 
  soft 
  

   and 
  will 
  run 
  down 
  toward 
  the 
  head, 
  leaving 
  the 
  region 
  of 
  the 
  vent 
  

   loose 
  and 
  tiabby, 
  and 
  the 
  operator, 
  retaining 
  his 
  hold 
  of 
  the 
  tail 
  with 
  

   his 
  right 
  hand, 
  places 
  the 
  head 
  of 
  the 
  fish 
  under 
  his 
  left 
  arm 
  with 
  the 
  

   back 
  uppermost, 
  the 
  head 
  highest, 
  and 
  the 
  vent 
  immediately 
  over 
  the 
  

   pan. 
  At 
  first 
  the 
  fish 
  generally 
  struggles 
  violently 
  and 
  no 
  spawn 
  

   will 
  flow; 
  but 
  as 
  soon 
  as 
  she 
  yields 
  the 
  eggs 
  flow 
  in 
  a 
  continuous 
  

   stream, 
  rattling 
  sometimes 
  with 
  great 
  force 
  against 
  the 
  bottom 
  of 
  the 
  

   pan. 
  Shortly 
  the 
  flow 
  slackens 
  and 
  must 
  be 
  encouraged 
  and 
  forced 
  by 
  

   pressing 
  and 
  stroking 
  the 
  abdomen 
  with 
  the 
  left 
  hand. 
  It 
  is 
  better 
  to 
  

   use 
  the 
  face 
  of 
  the 
  palm 
  or 
  the 
  edge 
  of 
  the 
  hand 
  rather 
  than 
  pinch 
  

   between 
  the 
  thumb 
  and 
  finger; 
  the 
  latter 
  action, 
  especially 
  when 
  work- 
  

   ing 
  down 
  near 
  the 
  vent, 
  is 
  apt 
  to 
  rupture 
  some 
  of 
  the 
  minor 
  blood 
  

   vessels, 
  with 
  the 
  result 
  of 
  internal 
  bleeding, 
  and 
  it 
  is 
  better 
  to 
  leave 
  

   some 
  of 
  the 
  eggs 
  behind 
  to 
  be 
  taken 
  another 
  day 
  than 
  to 
  run 
  the 
  risk 
  

   of 
  such 
  ruptures. 
  

  

  If 
  the 
  fish 
  in 
  hand 
  is 
  fully 
  ripe, 
  nine-tenths 
  of 
  the 
  eggs 
  are 
  obtained 
  

   at 
  the 
  first 
  trial. 
  When 
  the 
  ojieration 
  has 
  apparently 
  gone 
  far 
  enough 
  

   for 
  the 
  first 
  day, 
  the 
  fish 
  is 
  laid 
  in 
  the 
  weighing 
  bag, 
  and 
  as 
  soon 
  as 
  the 
  

   weight 
  is 
  recorded 
  is 
  stretched 
  upon 
  the 
  measuring 
  board, 
  whence 
  she 
  

   is 
  returned 
  to 
  the 
  water, 
  after 
  a 
  stay 
  of 
  10 
  or 
  15 
  minutes 
  in 
  the 
  air, 
  

   which 
  results 
  in 
  no 
  permanent 
  injury. 
  Both 
  the 
  weight 
  and 
  length 
  of 
  

   the 
  fish 
  and 
  the 
  weight 
  of 
  the 
  eggs 
  are 
  recorded, 
  together 
  with 
  anything 
  

   remarkable 
  connected 
  with 
  fish 
  or 
  eggs. 
  

  

  Large 
  salmon 
  endure 
  trausi)ortation 
  and 
  confinement 
  less 
  success- 
  

   fully 
  than 
  smaller 
  ones, 
  and 
  the 
  record 
  therefore 
  shows 
  large 
  numbers 
  

   of 
  salmon 
  from 
  29 
  to 
  31 
  inches 
  in 
  length, 
  weighing, 
  including 
  eggs, 
  from 
  

   9 
  to 
  12 
  pounds, 
  and 
  yielding 
  2A 
  to 
  3 
  pounds 
  of 
  spawn 
  (0,000 
  to 
  8,700 
  

   eggs), 
  with 
  now 
  and 
  then 
  a 
  fish 
  35 
  or 
  40 
  inches 
  in 
  length, 
  yielding, 
  in 
  

   some 
  cases, 
  as 
  many 
  as 
  16,000 
  to 
  20,000 
  eggs. 
  

  

  As 
  soon 
  as 
  the 
  spawn 
  of 
  a 
  single 
  female 
  is 
  taken, 
  a 
  male 
  is 
  brought 
  

   to 
  the 
  spawn-taker 
  and 
  the 
  milt 
  expressed 
  upon 
  the 
  eggs. 
  The 
  pan 
  is 
  

   then 
  swayed 
  and 
  shaken 
  violently 
  until 
  the 
  milt 
  becomes 
  well 
  dis- 
  

   tributed 
  and 
  in 
  contact 
  with 
  every 
  egg. 
  If 
  the 
  quantity 
  of 
  spawn 
  

   exceeds 
  3 
  pounds 
  it 
  is 
  divided 
  and 
  fecundated 
  in 
  two 
  pans 
  instead 
  of 
  

   one, 
  as 
  it 
  is 
  difficult 
  to 
  secure 
  a 
  good 
  result 
  if 
  the 
  eggs 
  lie 
  in 
  too 
  great 
  

  

  