﻿FISHEEY 
  INDUSTRIES. 
  69 
  

  

  been 
  75,000,000 
  had 
  not 
  a 
  number 
  of 
  spawning 
  salmon 
  escaped 
  by 
  

   reason 
  of 
  high 
  water. 
  Plants 
  aggregating 
  60,422,100 
  fry 
  were 
  made 
  

   during 
  the 
  first 
  six 
  months 
  of 
  the 
  year 
  1913. 
  On 
  October 
  22, 
  1912, 
  

   a 
  shipment 
  of 
  2,000,000 
  eggs 
  was 
  made 
  to 
  the 
  Oregon 
  Fish 
  Com- 
  

   mission. 
  It 
  is 
  through 
  the 
  month 
  of 
  September 
  that 
  practically 
  all 
  

   of 
  the 
  eggs 
  are 
  taken 
  at 
  Yes 
  Bay. 
  During 
  the 
  1913-14 
  season 
  the 
  

   aggregate 
  number 
  of 
  red 
  salmon 
  eggs 
  secured 
  was 
  49,050,000. 
  Of 
  

   this 
  year's 
  collection, 
  a 
  shipment 
  of 
  2,000,000 
  eggs 
  was 
  also 
  made 
  in 
  

   October 
  to 
  the 
  Oregon 
  Fish 
  Commission. 
  

  

  The 
  salt 
  solution 
  was 
  again 
  used 
  this 
  season 
  very 
  successfully 
  in 
  

   removing 
  any 
  dead 
  eggs 
  occurring 
  in 
  the 
  baskets, 
  thus 
  effecting 
  a 
  

   great 
  saving 
  in 
  labor 
  as 
  compared 
  with 
  the 
  old 
  process 
  of 
  hand 
  picking. 
  

   Most 
  of 
  the 
  eggs 
  were 
  run 
  through 
  the 
  solution 
  during 
  the 
  month 
  of 
  

   November. 
  The 
  eggs 
  taken 
  during 
  the 
  early 
  part 
  of 
  the 
  season 
  when 
  

   the 
  water 
  is 
  warmer 
  begin 
  to 
  hatch 
  when 
  about 
  80 
  days 
  old, 
  while 
  the 
  

   eggs 
  taken 
  near 
  the 
  end 
  of 
  the 
  season 
  when 
  the 
  water 
  is 
  cooler 
  do 
  not 
  

   begin 
  to 
  hatch 
  until 
  when 
  about 
  140 
  days 
  old. 
  The 
  mean 
  tempera- 
  

   ture 
  of 
  the 
  water 
  during 
  the 
  period 
  of 
  incubation 
  at 
  the 
  Yes 
  Bay 
  

   station 
  averages 
  about 
  as 
  follows: 
  September, 
  51§°; 
  October, 
  46^°; 
  

   November, 
  38^°; 
  December, 
  35^°; 
  January, 
  32i°; 
  February, 
  33f°, 
  

   and 
  March, 
  33° 
  F. 
  

  

  Restrictions 
  of 
  commercial 
  fishing 
  operations 
  on 
  Yes 
  Bay 
  were 
  

   enforced 
  this 
  year 
  as 
  usual. 
  The 
  purpose 
  of 
  this 
  is 
  to 
  permit 
  a 
  sufficient 
  

   escape 
  of 
  spawning 
  salmon 
  to 
  supply 
  the 
  needs 
  of 
  the 
  hatchery. 
  In 
  

   line 
  with 
  the 
  present-day 
  policy 
  to 
  feed 
  young 
  salmon 
  before 
  planting, 
  

   several 
  ponds 
  have 
  been 
  in 
  process 
  of 
  construction 
  with 
  the 
  close 
  of 
  

   the 
  calendar 
  year 
  at 
  the 
  Yes 
  Bay 
  station. 
  Also 
  last 
  year 
  160 
  fry 
  

   troughs 
  were 
  constructed 
  and 
  placed 
  in 
  position 
  under 
  the 
  hatching 
  

   troughs 
  for 
  the 
  purpose 
  of 
  holding 
  a 
  larger 
  number 
  of 
  young 
  fish 
  in 
  

   the 
  hatchery. 
  

  

  Early 
  in 
  the 
  year 
  two 
  experimental 
  troughs 
  were 
  constructed, 
  

   one 
  with 
  a 
  very 
  smooth 
  bottom 
  while 
  the 
  other 
  was 
  rather 
  rough. 
  

   These 
  were 
  painted 
  with 
  asphaltum 
  and 
  fry 
  were 
  placed 
  in 
  each 
  to 
  

   ascertain 
  any 
  possible 
  difference 
  that 
  the 
  condition 
  of 
  the 
  bottom 
  

   might 
  have 
  upon 
  them. 
  It 
  developed 
  that 
  in 
  the 
  case 
  of 
  the 
  smooth- 
  

   bottomed 
  trough 
  the 
  fry 
  remained 
  near 
  the 
  head 
  and 
  but 
  few 
  died, 
  

   while 
  in 
  the 
  rough-bottomed 
  trough 
  the 
  fry 
  seemed 
  uneasy 
  and 
  kept 
  

   working 
  down 
  to 
  the 
  foot 
  screen. 
  The 
  loss 
  in 
  this 
  trough 
  was 
  much 
  

   greater 
  than 
  in 
  the 
  one 
  with 
  the 
  smooth 
  bottom. 
  This 
  experiment 
  

   seems 
  to 
  show 
  the 
  necessity 
  of 
  having 
  a 
  smooth 
  bottom 
  in 
  all 
  troughs 
  

   containing 
  fry. 
  

  

  For 
  the 
  purpose 
  of 
  collecting 
  humpback 
  eggs, 
  a 
  temporary 
  field 
  

   station 
  was 
  installed 
  at 
  Ketchikan. 
  New 
  troughs 
  with 
  a 
  capacity 
  of 
  

   6,000,000 
  eggs 
  were 
  built 
  and 
  baskets 
  were 
  transferred 
  from 
  the 
  Yes 
  

   Bay 
  station. 
  The 
  water 
  supply 
  came 
  from 
  a 
  near-by 
  power 
  flume. 
  

  

  22889°— 
  14 
  18 
  

  

  