﻿LIV 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  the 
  roller 
  process. 
  They 
  coinnieiiced 
  to 
  take 
  food 
  on 
  April 
  8, 
  and 
  were 
  

   apparently 
  healthy 
  and 
  vigorous 
  until 
  April 
  17, 
  when 
  a 
  considerable 
  

   number 
  of 
  dead 
  ones 
  were 
  discovered 
  at 
  the 
  bottom 
  of 
  the 
  tanks. 
  

   The 
  death 
  rate 
  continued 
  to 
  increase 
  from 
  this 
  time 
  until 
  about 
  the 
  

   28th, 
  when 
  it 
  had 
  become 
  so 
  large 
  that 
  it 
  was 
  decided 
  to 
  plant 
  half 
  of 
  

   them. 
  The 
  balance 
  were 
  held 
  for 
  experimental 
  purposes, 
  and 
  various 
  

   kinds 
  of 
  food 
  were 
  tried, 
  but 
  they 
  all 
  died 
  on 
  the 
  night 
  of 
  May 
  6. 
  

   The 
  temperature 
  of 
  the 
  water 
  during 
  this 
  period 
  was 
  as 
  follows: 
  

  

  From 
  a 
  consigument 
  of 
  1,000,000 
  lake-trout 
  eggs 
  shipped 
  from 
  North- 
  

   ville 
  Station 
  794,000 
  fry 
  were 
  hatched 
  and 
  liberated 
  in 
  the 
  vicinity 
  of 
  

   the 
  station, 
  on 
  ISTorth 
  Bass 
  Island 
  and 
  Peach 
  Point 
  lieef. 
  

  

  Another 
  attempt 
  was 
  made 
  to 
  collect 
  black-bass 
  eggs 
  by 
  setting 
  out 
  

   artificial 
  nests 
  in 
  the 
  vicinity 
  of 
  the 
  hatchery. 
  Over 
  100 
  were 
  prepared 
  

   and 
  placed 
  in 
  shallow 
  i:)laces, 
  but 
  owing 
  to 
  the 
  very 
  high 
  winds 
  and 
  low 
  

   temperature 
  jirevailing 
  during 
  the 
  spawning 
  season 
  only 
  three 
  broods 
  

   of 
  young 
  fish 
  were 
  hatched. 
  

  

  In 
  the 
  sjiriug 
  the 
  superintendent 
  made 
  an 
  investigation 
  of 
  the 
  stur- 
  

   geon 
  fisheries 
  at 
  the 
  west 
  end 
  of 
  the 
  bay, 
  with 
  the 
  view 
  to 
  taking 
  up 
  

   the 
  propagation 
  of 
  that 
  species, 
  but 
  it 
  was 
  found 
  that 
  the 
  conditions 
  

   would 
  not 
  warrant 
  it. 
  

  

  Following 
  is 
  a 
  record 
  of 
  the 
  maximum, 
  mean, 
  and 
  minimum 
  tempera- 
  

   tures 
  of 
  air 
  and 
  water, 
  by 
  months 
  : 
  

  

  