﻿FISHERY 
  INDUSTRIES. 
  77 
  

  

  during 
  their 
  sojourn 
  in 
  the 
  lake. 
  Kecent 
  observations 
  have 
  clearly 
  

   demonstrated 
  the 
  absurdity 
  of 
  the 
  view 
  that 
  destroying 
  humpback 
  

   sahnon 
  will 
  conserve 
  the 
  fry 
  food 
  in 
  a 
  lake. 
  The 
  humpback 
  fry 
  do 
  

   not 
  feed 
  in 
  fresh 
  water, 
  but 
  go 
  to 
  sea 
  as 
  soon 
  as 
  able 
  to 
  swim. 
  The 
  

   destruction 
  of 
  this 
  fish 
  can 
  accomplish 
  no 
  useful 
  purpose, 
  and 
  is 
  a 
  

   plain 
  violation 
  of 
  the 
  wanton 
  waste 
  section 
  of 
  the 
  law. 
  

  

  Upon 
  the 
  assumption 
  that 
  Capt. 
  Callbreath's 
  practice 
  of 
  destroying 
  

   humpbacks 
  during 
  the 
  last 
  few 
  years 
  arose 
  from 
  a 
  misunderstanding 
  

   both 
  of 
  the 
  habits 
  of 
  the 
  salmon 
  and 
  of 
  supposed 
  private 
  rights 
  

   acquired 
  by 
  the 
  maintenance 
  of 
  a 
  hatchery 
  during 
  earlier 
  yeai-s 
  on 
  the 
  

   stream 
  in 
  question, 
  the 
  Bureau 
  invited 
  the 
  citation 
  of 
  any 
  documentary 
  

   proof 
  of 
  a 
  grant 
  or 
  privilege 
  exempting 
  the 
  stream 
  from 
  the 
  operation 
  

   of 
  the 
  general 
  fisheries 
  law, 
  under 
  which 
  law 
  the 
  maintenance 
  of 
  a 
  

   barricade 
  is 
  a 
  punishable 
  offense, 
  as 
  is 
  also 
  the 
  wanton 
  waste 
  of 
  salmon. 
  

   No 
  such 
  proof 
  of 
  exemption 
  being 
  forthcoming, 
  the 
  barricade 
  in 
  the 
  

   stream 
  was 
  destroyed 
  this 
  season, 
  and 
  the 
  waters 
  assumed 
  the 
  status 
  

   of 
  other 
  open 
  streams 
  in 
  southeast 
  Alaska. 
  The 
  last 
  salmon 
  were 
  

   put 
  over 
  the 
  barricade 
  in 
  1912, 
  and 
  numbered 
  2,435 
  adult 
  sockeyes, 
  

   of 
  which 
  1,282 
  w^ere 
  males 
  and 
  1,153 
  females. 
  

  

  The 
  efforts 
  of 
  Capt. 
  Callbreath 
  afford 
  a 
  most 
  interesting 
  sidelight 
  

   on 
  the 
  history 
  of 
  the 
  Alaska 
  salmon 
  fi 
  dieries, 
  and 
  since 
  their 
  value 
  

   from 
  a 
  scientific 
  viewpoint 
  is 
  considerable, 
  it 
  is 
  the 
  more 
  unfortunate 
  

   that 
  the 
  heavy 
  expenditure 
  of 
  time 
  and 
  money 
  involved 
  should 
  have 
  

   been 
  proportionately 
  so 
  unprofitable 
  in 
  a 
  practical 
  way. 
  

  

  HATCHERY 
  METHODS. 
  

  

  Within 
  the 
  last 
  few 
  years 
  there 
  have 
  been 
  certain 
  radical 
  departures 
  

   in 
  the 
  methods 
  of 
  spawn 
  taking. 
  To 
  insure 
  thorough 
  understanding 
  

   of 
  these, 
  it 
  seems 
  appropriate 
  to 
  bring 
  the 
  matter 
  to 
  attention 
  at 
  

   this 
  time. 
  

  

  Each 
  ripe 
  female 
  salmon 
  should 
  be 
  killed 
  by 
  a 
  blow 
  on 
  the 
  head, 
  

   following 
  which 
  an 
  incision 
  should 
  be 
  made 
  in 
  the 
  abdominal 
  wall 
  

   from 
  the 
  pectoral 
  fins 
  to 
  the 
  region 
  of 
  the 
  vent. 
  The 
  eggs 
  wiU 
  flow 
  

   in 
  a 
  mass 
  into 
  the 
  spawning 
  pan 
  placed 
  beneath. 
  Immediately 
  after 
  

   being 
  fertilized 
  they 
  should 
  be 
  washed 
  by 
  immersing 
  in 
  the 
  stream 
  

   and 
  pouring 
  the 
  water 
  off. 
  Repeating 
  the 
  process 
  two 
  or 
  at 
  most 
  

   three 
  times 
  will 
  be 
  sufficient. 
  It 
  is 
  entirely 
  unnecessary 
  to 
  have 
  the 
  

   eggs 
  remain 
  in 
  milt 
  and 
  water 
  any 
  longer 
  than 
  is 
  required 
  in 
  the 
  wash- 
  

   ing 
  process 
  following 
  immediately 
  after 
  the 
  application 
  of 
  the 
  milt. 
  

  

  After 
  washing, 
  each 
  pan 
  of 
  eggs 
  should 
  be 
  poured 
  into 
  a 
  bucket 
  

   partly 
  filled 
  with 
  water 
  and 
  placed 
  in 
  the 
  bed 
  of 
  the 
  stream 
  where 
  

   the 
  water 
  is 
  several 
  inches 
  deep, 
  so 
  that 
  the 
  temperature 
  in 
  the 
  

   bucket 
  will 
  be 
  the 
  same 
  as 
  that 
  of 
  the 
  stream. 
  After 
  filling 
  the 
  

   bucket 
  about 
  half 
  full 
  of 
  eggs, 
  it 
  should 
  be 
  allowed 
  to 
  remain 
  undis- 
  

   turbed 
  for 
  about 
  an 
  hour, 
  or 
  until 
  such 
  time 
  as 
  the 
  eggs 
  have 
  become 
  

   fully 
  water 
  hardened 
  and 
  are 
  entirely 
  separated. 
  While 
  standing 
  in 
  

  

  