﻿CXIV 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  Propagation. 
  — 
  A 
  continuauco 
  of 
  the 
  joiut 
  efforts 
  to 
  increase 
  tlie 
  supply 
  of 
  wbitefish 
  

   and 
  lake 
  trout 
  through 
  the 
  agency 
  of 
  artificial 
  propagation 
  is 
  recommended. 
  

  

  LAKE 
  SUPERIOR. 
  

  

  The 
  remedial 
  measures 
  suggested 
  for 
  Lake 
  Superior 
  are 
  as 
  follows 
  : 
  

  

  (1) 
  In 
  all 
  localities 
  whore 
  there 
  is 
  evidence 
  of 
  overfishing 
  by 
  the 
  pound 
  nets 
  the 
  

   number 
  of 
  the 
  latter 
  should 
  be 
  suitably 
  restricted. 
  These 
  nets 
  should 
  be 
  separated 
  

   by 
  an 
  interval 
  of 
  at 
  least 
  1 
  mile, 
  and 
  they 
  should 
  not 
  be 
  allowed 
  to 
  extend 
  more 
  

   than 
  one-third 
  the 
  distance 
  across 
  any 
  channel 
  or 
  passageway. 
  

  

  (2) 
  Where 
  young 
  wbitefish 
  abound 
  and 
  may 
  be 
  captured 
  by 
  the 
  pound 
  nets 
  in 
  

   appreciable 
  quantities, 
  the 
  use 
  of 
  such 
  nets 
  should 
  be 
  prohibited 
  either 
  entirely 
  or 
  

   during 
  such 
  jieriods 
  as 
  the 
  young 
  of 
  that 
  species 
  may 
  be 
  so 
  present. 
  

  

  (3) 
  The 
  mesh 
  in 
  the 
  cribs 
  of 
  all 
  pound 
  nets 
  should 
  measure 
  at 
  least 
  4 
  inches 
  in 
  

   extension 
  when 
  in 
  use. 
  "* 
  

  

  (4) 
  It 
  would 
  seem 
  that 
  the 
  extent 
  of 
  gill-net 
  fishing 
  for 
  wbitefish 
  and 
  trout 
  had 
  

   reached, 
  if 
  not 
  passed, 
  a 
  safe 
  limitation, 
  and 
  that 
  some 
  restriction 
  should 
  be 
  placed 
  

   upon 
  the 
  quantity 
  of 
  gill 
  nets 
  to 
  be 
  fished 
  hereafter. 
  Further 
  observations, 
  how- 
  

   ever, 
  are 
  required 
  to 
  establish 
  a 
  satisfactory 
  basis 
  for 
  action 
  in 
  this 
  matter. 
  

  

  (5) 
  The 
  mesh 
  in 
  gill 
  nets 
  employed 
  for 
  the 
  capture 
  of 
  the 
  common 
  wbitefish 
  and 
  

   the 
  lake 
  trout 
  shoukl 
  measure 
  not 
  less 
  than 
  4^7 
  inches, 
  and 
  we 
  consider 
  that 
  a 
  5-inch 
  

   mesh 
  would 
  be 
  preferable. 
  

  

  (6) 
  The 
  herring 
  gill 
  nets 
  and 
  those 
  used 
  for 
  the 
  smaller 
  varieties 
  of 
  wbitefish 
  

   require 
  a 
  smaller 
  mesh 
  than 
  the 
  above, 
  but 
  the 
  conditions 
  under 
  which 
  such 
  nets 
  

   may 
  bo 
  employed 
  should 
  l)e 
  exiilicitly 
  defined. 
  

  

  (7) 
  No 
  restrictions 
  appear 
  to 
  be 
  called 
  for 
  at 
  present 
  in 
  respect 
  to 
  the 
  herring 
  gill 
  

   nets, 
  except 
  that 
  their 
  use 
  should 
  be 
  prohibited 
  wherever 
  yoimg 
  wbitefish 
  would 
  be 
  

   taken 
  in 
  them. 
  

  

  (8) 
  The 
  number 
  of 
  seines 
  employed 
  at 
  present 
  is 
  relatively 
  small, 
  and 
  it 
  should 
  

   not 
  be 
  allowed 
  to 
  increase 
  beyond 
  a 
  safe 
  limitation. 
  

  

  (9) 
  The 
  mesh 
  in 
  wbitefish 
  seines 
  should 
  measure 
  not 
  less 
  than 
  3^ 
  inches 
  in 
  the 
  

   bunt 
  and 
  4^ 
  inches 
  in 
  the 
  wings. 
  

  

  (10) 
  The 
  use 
  of 
  all 
  kinds 
  of 
  seines 
  should 
  be 
  prohibited 
  wherever 
  the 
  capture 
  of 
  

   young 
  wbitefish 
  is 
  involved, 
  either 
  entirely 
  or 
  during 
  the 
  seasons 
  when 
  the 
  young 
  

   are 
  present. 
  

  

  (11) 
  It 
  is 
  considered 
  that 
  it 
  would 
  be 
  beneficial 
  to 
  institute 
  a 
  close 
  season 
  covering 
  

   the 
  spawning 
  period 
  of 
  the 
  wbitefish, 
  during 
  which 
  no 
  fishing 
  for 
  the 
  species 
  should 
  

   be 
  permitted. 
  

  

  (12) 
  All 
  sturgeon 
  measuring 
  less 
  than 
  4 
  feet 
  long 
  which 
  may 
  be 
  taken 
  by 
  any 
  

   means 
  should 
  be 
  returned 
  alive 
  to 
  the 
  water. 
  

  

  (13) 
  It 
  may 
  be 
  found 
  advisable 
  to 
  establish 
  local 
  regulations 
  for 
  the 
  protection 
  of 
  

   the 
  wall-eyed 
  pike 
  in 
  places 
  where 
  they 
  occur, 
  but 
  no 
  information 
  tiiat 
  would 
  be 
  

   serviceable 
  in 
  tliat 
  respect 
  has 
  been 
  collected. 
  

  

  (14) 
  The 
  throwing 
  into 
  the 
  water 
  of 
  fish 
  offal 
  and 
  of 
  all 
  other 
  deleterious 
  substances 
  

   in 
  places 
  where 
  it 
  would 
  be 
  harmful 
  to 
  fish 
  life 
  should 
  be 
  prohibited. 
  

  

  (15) 
  Joint 
  efforts 
  for 
  the 
  increase 
  of 
  the 
  supply 
  of 
  both 
  the 
  wbitefish 
  and 
  the 
  lake 
  

   trout 
  by 
  means 
  of 
  artificial 
  propagation 
  are 
  recommended. 
  

  

  LAKE 
  OF 
  THE 
  WOODS, 
  RAINY 
  LAKE, 
  AND 
  RAINY 
  RIVER. 
  

  

  International 
  interests 
  on 
  Lake 
  of 
  the 
  Woods 
  are 
  concerned 
  chiefly 
  with 
  the 
  pres- 
  

   ervation 
  of 
  the 
  sturgeon. 
  Although 
  the 
  pound-net 
  catch 
  of 
  scale 
  iish 
  is 
  comparatively 
  

   large 
  and 
  important, 
  especially 
  at 
  certain 
  seasons, 
  should 
  the 
  capture 
  of 
  sturgeon 
  

   become 
  unprofitable 
  at 
  any 
  timp, 
  that 
  method 
  of 
  fishing 
  would 
  probably 
  be 
  mostly, 
  

   if 
  not 
  entirely 
  abandoned, 
  and 
  little 
  else 
  be 
  done 
  thereafter 
  in 
  waters 
  clo.sely 
  adjacent 
  

   to 
  the 
  boundary 
  line. 
  As 
  both 
  the 
  scale 
  fish 
  and 
  sturgeon, 
  however, 
  are 
  taken 
  

   together 
  and 
  under 
  the 
  same 
  conditions, 
  their 
  preservation 
  should 
  and 
  can 
  be 
  

   arranged 
  for 
  on 
  a 
  common 
  basis. 
  

  

  