﻿70 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  Experience 
  at 
  Green 
  Lake 
  lias 
  supplied 
  some 
  interesting 
  data. 
  Here 
  

   we 
  find 
  the 
  breeding- 
  grounds 
  of 
  the 
  salmon 
  both 
  in 
  the 
  affluents 
  and 
  in 
  

   the 
  effluent 
  of 
  the 
  lake, 
  but, 
  unlike 
  Grand 
  Lake, 
  mainly 
  in 
  the 
  affluents. 
  

   Great 
  Brook, 
  the 
  largest 
  tributary, 
  is 
  most 
  resorted 
  to, 
  and 
  on 
  this 
  

   stream 
  is 
  located 
  the 
  station 
  of 
  the 
  United 
  States 
  Fish 
  Commission. 
  

   The 
  most 
  of 
  the 
  breeders 
  are 
  taken 
  in 
  a 
  trap 
  in 
  the 
  brook, 
  which 
  

   they 
  readily 
  enter 
  when 
  seeking 
  to 
  ascend 
  to 
  their 
  natural 
  breeding- 
  

   grounds 
  just 
  above. 
  The 
  trap 
  is 
  constructed 
  of 
  wood 
  and 
  close 
  to 
  it, 
  

   also 
  in 
  the 
  bed 
  of 
  the 
  brook, 
  are 
  numerous 
  pens 
  of 
  the 
  same 
  material 
  

   in 
  which 
  the 
  fish 
  are 
  assorted 
  and 
  held 
  during 
  the 
  spawning 
  season. 
  

   On 
  the 
  bank, 
  snug 
  by 
  the 
  pens, 
  is 
  the 
  spawn-house, 
  and 
  a 
  few 
  rods 
  

   away 
  is 
  the 
  hatchery. 
  The 
  hatchery 
  is 
  supplied 
  with 
  water 
  from 
  Eocky 
  

   Pond, 
  the 
  source 
  of 
  Great 
  Brook, 
  by 
  a 
  wooden 
  flume 
  7,050 
  feet 
  long, 
  

   supported 
  by 
  wooden 
  trestles, 
  at 
  some 
  points 
  elevated 
  many 
  feet 
  above 
  

   the 
  ground. 
  In 
  cold 
  weather 
  the 
  water 
  cools 
  off 
  1^ 
  degrees 
  in 
  passing 
  

   down 
  this 
  flume; 
  in 
  warm 
  weather 
  it 
  warms 
  up 
  1^ 
  degrees. 
  Though 
  

   the 
  summer 
  temperature 
  during 
  the 
  early 
  years 
  of 
  the 
  station 
  was 
  

   sometimes 
  over 
  80° 
  F, 
  and 
  some 
  other 
  species 
  succumbed 
  to 
  the 
  heat, 
  

   the 
  landlocked 
  salmon 
  endured 
  it 
  safely, 
  and 
  the 
  only 
  notable 
  effect 
  on 
  

   them 
  was 
  that 
  at 
  75° 
  and 
  upward 
  the 
  adults 
  reared 
  in 
  the 
  station 
  ponds 
  

   refused 
  to 
  eat. 
  

  

  As 
  at 
  the 
  Schoodic 
  station, 
  among 
  the 
  adult 
  wild 
  salmon 
  caught 
  

   for 
  breeding 
  each 
  year 
  are 
  many 
  more 
  females 
  than 
  males. 
  In 
  1889 
  

   the 
  proportion 
  was 
  3 
  females 
  to 
  2 
  males 
  ; 
  in 
  1893 
  it 
  was 
  9 
  to 
  4. 
  The 
  

   size 
  of 
  the 
  Green 
  Lake 
  salmon 
  is 
  remarkable; 
  the 
  mean 
  of 
  69 
  fuU-roed 
  

   females 
  in 
  1889 
  was 
  7.8 
  pounds 
  in 
  weight 
  and 
  25.5 
  inches 
  in 
  length; 
  the 
  

   males 
  the 
  same 
  year 
  averaged 
  5 
  pounds 
  in 
  weight 
  and 
  22.3 
  inches 
  

   in 
  length; 
  one 
  female 
  weighed 
  11 
  pounds 
  9 
  ounces, 
  and 
  measured 
  30 
  

   inches; 
  another, 
  11 
  pounds 
  6 
  ounces 
  in 
  weight, 
  was 
  30^ 
  inches 
  in 
  

   length; 
  one 
  male, 
  31 
  inches 
  long, 
  weighed 
  13 
  pounds 
  8 
  ounces. 
  The 
  

   number 
  of 
  eggs 
  yielded 
  by 
  the 
  females 
  is 
  about 
  4,000 
  each. 
  

  

  