﻿EEPORT 
  OF 
  THE 
  COMMISSIONER 
  OP 
  FISHERIES. 
  15 
  

  

  rearing 
  a 
  larger 
  number 
  of 
  salmon 
  fry 
  to 
  the 
  fingerling 
  stage 
  than 
  

   ever 
  before. 
  

  

  Commercial 
  fishes 
  of 
  the 
  Great 
  Lakes. 
  — 
  The 
  extensive 
  and 
  long- 
  

   continued 
  operations 
  of 
  the 
  Bureau 
  in 
  the 
  Great 
  Lakes 
  are 
  addressed 
  

   to 
  the 
  lake 
  trout, 
  whitefish, 
  cisco 
  or 
  lake 
  herring, 
  and 
  pike 
  perch. 
  

   In 
  addition 
  to 
  the 
  stations 
  belonging 
  to 
  the 
  Government, 
  several 
  

   hatcheries, 
  abandoned 
  by 
  the 
  State 
  of 
  Michigan 
  for 
  a 
  number 
  of 
  

   years 
  because 
  of 
  the 
  discontinuance 
  of 
  work 
  of 
  this 
  character, 
  were 
  

   leased 
  by 
  the 
  Bureau 
  and 
  operated 
  with 
  temporary 
  personnel. 
  

  

  The 
  most 
  important 
  fish-cultural 
  work 
  of 
  the 
  Duluth, 
  Minn., 
  

   station 
  — 
  the 
  maintenance 
  of 
  the 
  lake 
  trout 
  fisheries 
  of 
  Lake 
  Su- 
  

   perior 
  — 
  was 
  sUghtly 
  interfered 
  with 
  by 
  storms 
  occurring 
  at 
  the 
  height 
  

   of 
  the 
  spawning 
  season, 
  which 
  not 
  only 
  reduced 
  the 
  egg 
  collections 
  

   considerably 
  below 
  what 
  had 
  been 
  anticipated, 
  but 
  also 
  impaired 
  to 
  

   some 
  extent 
  the 
  quality 
  of 
  the 
  eggs 
  secured. 
  The 
  spawning 
  season 
  

   in 
  the 
  various 
  fields 
  of 
  this 
  lake 
  extended 
  from 
  September 
  25 
  to 
  

   December 
  6, 
  and 
  resulted 
  in 
  the 
  collection 
  of 
  10,035,000 
  eggs, 
  which 
  

   stock 
  was 
  augmented 
  by 
  the 
  transfer 
  of 
  5,000,000 
  green 
  eggs 
  from 
  

   the 
  Manistique 
  field, 
  a 
  subsidiary 
  of 
  the 
  Northville 
  station. 
  The 
  

   output 
  of 
  lake 
  trout 
  fiom 
  Duluth 
  consisted 
  of 
  1,260,000 
  eyed 
  eggs, 
  

   for 
  the 
  stocking 
  of 
  various 
  Government, 
  State, 
  and 
  private 
  hatch- 
  

   eries, 
  and 
  6,825,000 
  fry 
  and 
  fingerhng 
  fish, 
  for 
  hberation 
  on 
  the 
  

   spawning 
  grounds 
  in 
  Lake 
  Superior. 
  Additional 
  transfers 
  of 
  eggs 
  

   of 
  commercial 
  species 
  from 
  other 
  stations 
  to 
  Duluth 
  comprised 
  

   20,000,000 
  whitefish 
  eggs 
  from 
  Put-in 
  Bay 
  station 
  and 
  25,000,000 
  

   pike-perch 
  eggs 
  from 
  Detroit, 
  which 
  were 
  hatched 
  and 
  distributed 
  

   with 
  only 
  normal 
  losses, 
  the 
  whitefish 
  being 
  deposited 
  in 
  Lake 
  

   Superior 
  and 
  the 
  pike 
  perch 
  utilized 
  in 
  filling 
  applications 
  for 
  the 
  

   stocking 
  of 
  various 
  inland 
  lakes 
  in 
  Minnesota 
  and 
  adjacent 
  States. 
  

  

  In 
  the 
  fields 
  operated 
  from 
  the 
  Michigan 
  stations 
  the 
  spawning 
  

   season 
  of 
  the 
  lake 
  trout 
  opened 
  October 
  21, 
  a 
  week 
  later 
  than 
  usual, 
  

   and 
  was 
  just 
  at 
  its 
  height 
  at 
  the 
  beginnmg 
  of 
  the 
  close 
  season 
  on 
  

   November 
  20, 
  when 
  under 
  the 
  State 
  law 
  it 
  became 
  necessary 
  to 
  sus- 
  

   pend 
  operations. 
  The 
  collections 
  of 
  eggs 
  at 
  all 
  points 
  numbered 
  

   53,907,500, 
  and 
  had 
  the 
  open 
  season 
  been 
  extended 
  a 
  week 
  it 
  is 
  esti- 
  

   mated 
  that 
  many 
  million 
  more 
  eggs 
  might 
  have 
  been 
  secured. 
  Ap- 
  

   proximately 
  14,000,000 
  eggs 
  were 
  utUized 
  in 
  stocking 
  various 
  Govern- 
  

   ment 
  and 
  State 
  hatcheries, 
  and 
  13,500,000 
  fry 
  were 
  hatched 
  and 
  re- 
  

   turned 
  to 
  the 
  spawning 
  grounds 
  in 
  Lakes 
  Michigan 
  and 
  Huron. 
  The 
  

   whitefish 
  spawnmg 
  season 
  in 
  Michigan 
  waters 
  extended 
  over 
  a 
  period 
  

   of 
  two 
  months 
  from 
  October 
  9, 
  the 
  largest 
  egg 
  collections 
  being 
  ob- 
  

   tained 
  from 
  the 
  Detroit 
  River 
  fields, 
  where 
  fishing 
  was 
  conducted 
  

   under 
  the 
  auspices 
  of 
  the 
  State 
  game, 
  fish, 
  and 
  forestry 
  warden's 
  

   department. 
  Extensive 
  collections 
  of 
  eggs 
  were 
  made 
  also 
  at 
  Charity 
  

   Island, 
  in 
  Saginaw 
  Bay, 
  the 
  brood 
  fish 
  being 
  secured 
  from 
  pound 
  

  

  