﻿62 
  

  

  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  the 
  spawning 
  period. 
  By 
  this 
  arrangement 
  it 
  became 
  much 
  easier 
  to 
  

   handle 
  the 
  fish 
  and 
  to 
  segregate 
  the 
  sexes 
  and 
  the 
  spent 
  from 
  the. 
  

   unripe 
  fish. 
  

  

  The 
  following 
  tables 
  show 
  the 
  loss 
  of 
  eggs 
  and 
  fry 
  in 
  the 
  hatchery, 
  

   the 
  percentage 
  of 
  fry 
  transferred 
  to 
  the 
  rearing-poiuls, 
  and 
  the 
  maxi- 
  

   mum 
  and 
  minimum 
  temperatures 
  of 
  water 
  to 
  which 
  the 
  various 
  species 
  

   were 
  subjected 
  during 
  the 
  year: 
  

  

  Snmmrtrii 
  of 
  temperatures 
  to 
  irhich 
  the 
  rarioux 
  speeics 
  were 
  fiHhJertefl. 
  

  

  Species. 
  

  

  Trout, 
  rainbows, 
  fry 
  to 
  6 
  years 
  old 
  

  

  Black 
  bass, 
  fry 
  to 
  6 
  years 
  

  

  Eock 
  bas.s, 
  fry 
  to 
  G 
  years 
  

  

  Strawberry 
  bass, 
  fry 
  to 
  adults 
  

  

  Tench, 
  fry 
  to 
  6 
  years 
  

  

  Goldfish, 
  fry 
  to 
  adults 
  

  

  Maximum. 
  Minimum 
  

  

  In 
  view 
  of 
  the 
  success 
  attained 
  in 
  the 
  rearing 
  of 
  black 
  bass 
  and 
  rock 
  

   bass 
  in 
  the 
  troughs 
  and 
  hatching-house, 
  it 
  is 
  recommended 
  that 
  the 
  

   hatching 
  facilities 
  be 
  doubled. 
  At 
  present 
  there 
  are 
  only 
  eleven 
  troughs, 
  

   which 
  are 
  entirely 
  inadequate 
  for 
  the 
  needs 
  of 
  the 
  station. 
  

  

  Leadville 
  Station, 
  Colorado 
  (E. 
  A. 
  Tuliax, 
  SrrERixTEXDENT). 
  

  

  The 
  Government 
  having 
  acquired 
  the 
  right 
  to 
  use 
  the 
  Avater 
  of 
  llock 
  

   Creek 
  and 
  Evergreen 
  Lakes, 
  operations 
  were 
  commenced 
  in 
  June, 
  1895, 
  

   with 
  the 
  view 
  to 
  increasing 
  the 
  water 
  supply 
  to 
  the 
  hatchery. 
  A 
  

   solid 
  ri]3rap 
  dam 
  was 
  built 
  in 
  Eock 
  Creek 
  above 
  the 
  head 
  of 
  Evergreen 
  

   Lakes 
  ditch, 
  and 
  a 
  wooden 
  pipe 
  was 
  laid 
  at 
  an 
  elevation 
  of 
  9,918.(}6 
  

   feet, 
  to 
  connect 
  the 
  intake 
  crib 
  with 
  an 
  intermediate 
  crib 
  1,644 
  feet 
  

   distant. 
  The 
  intermediate 
  crib 
  was 
  connected 
  with 
  Evergreen 
  Lakes 
  

   by 
  a 
  16-incli 
  overflow 
  flume, 
  and 
  an 
  8-inch 
  outlet 
  pipe 
  was 
  laid 
  to 
  a 
  lower 
  

   crib, 
  2,258 
  feet 
  distant. 
  This 
  lower 
  crib 
  was 
  provided 
  with 
  an 
  8-inch 
  

   outlet 
  pipe 
  and 
  an 
  overflow 
  flume 
  10 
  by 
  16 
  inches, 
  the 
  elevation 
  at 
  the 
  

   overflow 
  being 
  9,706.85 
  feet. 
  The 
  8-inch 
  pipe 
  conveys 
  the 
  water 
  to 
  

   the 
  hatchery 
  reservoir, 
  451 
  feet 
  distant 
  ; 
  it 
  also 
  supplies 
  the 
  house 
  and 
  

   stables, 
  and 
  has 
  hydrant 
  connections 
  at 
  other 
  points. 
  

  

  On 
  August 
  9 
  the 
  water 
  was 
  turned 
  into 
  the 
  pipe, 
  and 
  the 
  flow 
  into 
  

   the 
  intermediate 
  crib 
  was 
  found 
  to 
  be 
  2,350 
  gallons 
  i^er 
  minute, 
  and 
  

  

  