﻿48 
  BEPORT 
  OF 
  THE 
  COMMISSIONER 
  OF 
  FISHERIES. 
  

  

  Great 
  Lakes 
  began 
  Novomber 
  1, 
  corresponding 
  closely 
  with 
  the 
  open- 
  

   ing 
  of 
  the 
  lake-trout 
  spawning 
  season, 
  while 
  the 
  new 
  law 
  prescribed 
  a 
  

   close 
  season 
  from 
  October 
  10 
  to 
  November 
  1. 
  Some 
  good 
  effects 
  of 
  

   the 
  provision 
  of 
  law 
  relative 
  to 
  the 
  saving 
  of 
  trout 
  spawn 
  by 
  the 
  com- 
  

   mercial 
  fishermen 
  permitted 
  to 
  fish 
  during 
  the 
  close 
  period 
  were 
  

   clearly 
  apparent 
  in 
  Lake 
  Superior 
  fields, 
  where 
  about 
  half 
  the 
  eggs 
  

   collected 
  were 
  secured 
  before 
  November 
  1. 
  The 
  benefits 
  of 
  the 
  law 
  

   were 
  hardly 
  discernible, 
  however, 
  in 
  the 
  work 
  on 
  Lakes 
  Michigan 
  and 
  

   Huron, 
  as 
  all 
  but 
  3,840,000 
  of 
  the 
  eggs 
  taken 
  in 
  these 
  waters 
  were 
  

   obtained 
  during 
  the 
  time 
  when 
  fishing 
  operations 
  were 
  not 
  restricted. 
  

  

  On 
  Lake 
  Superior 
  the 
  collecting 
  of 
  lake-trout 
  eggs 
  extended 
  from 
  

   September 
  21 
  to 
  December 
  3, 
  and 
  18,590,000 
  eggs 
  of 
  good 
  quality 
  

   were 
  obtained 
  and 
  transferred 
  to 
  the 
  Duluth 
  hatchery. 
  The 
  stock 
  

   of 
  this 
  hatchery 
  was 
  later 
  supple 
  iiented 
  by 
  the 
  transfer 
  of 
  3,684,000 
  

   eggs 
  from 
  one 
  of 
  the 
  fields 
  in 
  Lake 
  Michigan. 
  The 
  season's 
  work 
  

   with 
  the 
  lake 
  trout 
  at 
  Duluth 
  resulted 
  in 
  an 
  output 
  of 
  1,050,000 
  eyed 
  

   eggs, 
  which 
  were 
  shipped 
  on 
  assignment 
  to 
  various 
  State 
  fish 
  com- 
  

   missions 
  and 
  stations 
  of 
  the 
  Bureau, 
  and 
  16,225,000 
  fry 
  and 
  fingerling 
  

   fish. 
  Owing 
  to 
  the 
  late 
  spring 
  the 
  hatching 
  period 
  was 
  delayed 
  some- 
  

   what 
  beyond 
  the 
  usual 
  time, 
  but 
  both 
  fry 
  and 
  fingerling 
  fish 
  were 
  of 
  

   uniformly 
  fine 
  quality, 
  and 
  the 
  distributions, 
  which 
  extended 
  from 
  

   March 
  23 
  to 
  June 
  14, 
  were 
  accomplished 
  without 
  mishap. 
  While 
  

   favorable 
  weather 
  on 
  Lake 
  Superior 
  during 
  the 
  egg-collecting 
  period 
  

   is 
  partly 
  responsible 
  for 
  the 
  success 
  of 
  the 
  work, 
  it 
  may 
  also 
  be 
  at- 
  

   tributed 
  in 
  no 
  sir 
  all 
  ir.easure 
  to 
  the 
  enforcement 
  of 
  the 
  recently 
  

   enacted 
  fishery 
  legislation. 
  

  

  Incidental 
  to 
  the 
  lake-trout 
  work, 
  2,205,000 
  very 
  fine 
  whitefish 
  

   eggs 
  were 
  collected 
  in 
  one 
  of 
  the 
  Lake 
  Superior 
  fields 
  and 
  hatched 
  at 
  

   the 
  Duluth 
  station 
  in 
  connection 
  with 
  a 
  consignment 
  of 
  25,000,000 
  

   of 
  the 
  same 
  species 
  shipped 
  from 
  Put-in 
  Bay, 
  Ohio. 
  The 
  latter 
  con- 
  

   sign 
  n:ent 
  appeared 
  to 
  be 
  of 
  poor 
  quality 
  when 
  received, 
  but 
  the 
  

   unusually 
  favorable 
  water 
  temperatures 
  to 
  which 
  it 
  was 
  subjected 
  

   during 
  incubation 
  made 
  possible 
  a 
  yield 
  from 
  the 
  combined 
  stock 
  of 
  

   15,750,000 
  healthy, 
  vigorous 
  fry, 
  which 
  were 
  liberated 
  late 
  in 
  April 
  at 
  

   suitable 
  points 
  in 
  Lake 
  Superior. 
  Additional 
  work 
  accomplished 
  at 
  

   this 
  station 
  with 
  the 
  commercial 
  fishes 
  consisted 
  in 
  the 
  hatching 
  of 
  

   20,000,000 
  pike-perch 
  eggs 
  derived 
  from 
  the 
  Detroit 
  hatchery, 
  and 
  

   the 
  distribution 
  of 
  the 
  fry 
  to 
  applicants 
  in 
  Minnesota 
  and 
  Wisconsin. 
  

  

  The 
  weather 
  conditions 
  in 
  the 
  lake-trout 
  fields 
  operated 
  from 
  the 
  

   Michigan 
  stations 
  were 
  favorable 
  for 
  the 
  collection 
  of 
  eggs, 
  with 
  the 
  

   exception 
  of 
  a 
  severe 
  storm 
  on 
  November 
  9, 
  at 
  the 
  height 
  of 
  the 
  

   spawning 
  season, 
  which 
  caused 
  a 
  practical 
  suspension 
  of 
  the 
  work 
  

   for 
  nearly 
  a 
  week 
  and 
  materially 
  reduced 
  the 
  season's 
  collections. 
  

   Six 
  field 
  stations 
  for 
  the 
  collection 
  and 
  care 
  of 
  eggs 
  received 
  from 
  the 
  

   commercial 
  fishermen 
  were 
  opened 
  on 
  Lake 
  Michigan 
  and 
  two 
  on 
  

   Lake 
  Huron, 
  the 
  more 
  important 
  ones 
  being 
  placed 
  under 
  the 
  super- 
  

   vision 
  of 
  regidar 
  employees 
  of 
  the 
  Bureau, 
  while 
  trained 
  temporary 
  

   men 
  were 
  hired 
  to 
  take 
  charge 
  of 
  the 
  minor 
  stations. 
  With 
  the 
  view 
  

   of 
  insuring 
  a 
  good 
  quality 
  of 
  eggs, 
  experienced 
  spawn 
  takers 
  were 
  also 
  

   placed 
  on 
  the 
  large 
  stea 
  n 
  tugs 
  operating 
  in 
  the 
  most 
  productive 
  fields, 
  

   in 
  order 
  to 
  instruct 
  the 
  fishermen 
  in 
  taking 
  the 
  eggs. 
  Fishermen 
  

   operating 
  gasoline 
  boats 
  iook 
  the 
  spawn 
  without 
  such 
  assistance. 
  

   Of 
  the 
  52,910,380 
  eggs 
  resulting 
  from 
  the 
  season's 
  collections, 
  

   19,192,000 
  were 
  used 
  to 
  fill 
  applications 
  from 
  State 
  fish 
  commissions 
  

  

  