﻿XLV 
  

  

  Brook 
  Trout 
  — 
  {Salvelinns 
  fontinalis). 
  

  

  In 
  the 
  Fall 
  we 
  contracted 
  with 
  the 
  proprietors 
  of 
  the 
  Lud- 
  

   low 
  Trout 
  farm 
  in 
  Pennsylvania 
  for 
  one 
  hundred 
  thousand 
  

   eggs 
  of 
  the 
  brook 
  trout. 
  These 
  were 
  received 
  on 
  the 
  thirtieth 
  

   of 
  November, 
  1878. 
  Shortly 
  after 
  they 
  were 
  placed 
  in 
  the 
  

   hatching-house 
  in 
  Druid 
  Hill 
  Park 
  the 
  eggs 
  commenced 
  to 
  

   hatch. 
  The 
  fish 
  were 
  sufficiently 
  advanced 
  to 
  be 
  ready 
  for 
  

   issue 
  by 
  the 
  nineteenth 
  of 
  February, 
  when, 
  in 
  accordance 
  with 
  

   the 
  usual 
  custom, 
  the 
  distribution 
  commenced. 
  The 
  accom- 
  

   panying 
  tables 
  show 
  the 
  details. 
  

  

  As 
  there 
  was 
  an 
  unusual 
  mortality 
  with 
  the 
  eggs, 
  and 
  with 
  the 
  

   young 
  fish 
  soon 
  after 
  they 
  left 
  the 
  shell, 
  only 
  forty-seven 
  thous- 
  

   and 
  were 
  delivered 
  to 
  the 
  applicants. 
  Quite 
  a 
  number 
  of 
  fish 
  

   were 
  kept, 
  as 
  usual, 
  for 
  experimental 
  purposes. 
  It 
  was 
  very 
  

   important 
  that 
  we 
  should 
  thoroughly 
  test, 
  the 
  capacities 
  of 
  

   the 
  limited 
  ponds 
  adjacent 
  to 
  the 
  hatching-house 
  for 
  keeping 
  

   this 
  variety 
  of 
  fish 
  during 
  the 
  summer 
  months, 
  as 
  it 
  is 
  neces- 
  

   sary 
  that 
  we 
  should 
  raise 
  a 
  sufficient 
  number 
  of 
  fish 
  to 
  fur- 
  

   nish 
  breeders 
  enough 
  to 
  produce 
  eggs 
  adequate 
  to 
  supply 
  the 
  

   increasing 
  demands 
  for 
  trout. 
  The 
  necessity 
  for 
  purchasing 
  

   eggs 
  from 
  other 
  establishments 
  has 
  been 
  a 
  considerable 
  drain 
  

   on 
  the 
  resources 
  of 
  the 
  Commission. 
  

  

  If 
  we 
  can 
  keep 
  in 
  a 
  healthy 
  condition 
  a 
  few 
  hundred 
  adult 
  

   breeding 
  fish 
  in 
  our 
  own 
  ponds, 
  we 
  could, 
  without 
  any 
  addi- 
  

   tional 
  expense, 
  secure 
  a 
  large 
  number 
  of 
  eggs 
  for 
  distribution 
  

   each 
  season. 
  As 
  a 
  large 
  proportion 
  of 
  the 
  water 
  used 
  to 
  

   supply 
  the 
  trout-ponds 
  in 
  Druid 
  Hill 
  Park 
  is 
  derived 
  di- 
  

   rectly 
  from 
  tl'c 
  high 
  service 
  reservoir, 
  it 
  is 
  liable 
  to 
  consider- 
  

   able 
  elevation 
  of 
  temperature 
  during 
  the 
  hot 
  sumn)er 
  months, 
  

   and 
  tliis 
  heat 
  has 
  been 
  quite 
  disastrous 
  to 
  our 
  efforts 
  hitherto. 
  

  

  If 
  we 
  cannot 
  secure 
  sufficient 
  quantity 
  of 
  water 
  at 
  low 
  tem- 
  

   perature 
  to 
  enable 
  us 
  safely 
  to 
  keep 
  the 
  fish 
  of 
  this 
  family 
  in 
  

   the 
  ponds 
  at 
  Druid 
  Hill 
  Park, 
  it 
  will 
  be 
  necessary 
  for 
  us 
  to 
  

   secure 
  another 
  site 
  where 
  we 
  can 
  control 
  an 
  ample 
  supply 
  of 
  

   colder 
  water. 
  During 
  the 
  winter 
  months 
  the 
  water 
  is 
  all 
  that 
  

   can 
  be 
  desired, 
  and 
  we 
  have 
  been 
  most 
  successful 
  at 
  the 
  

   hatching-house 
  in 
  perfecting 
  the 
  eggs 
  and 
  caring 
  for 
  the 
  young 
  

  

  