﻿CIV 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  The 
  chief 
  annoyances 
  to 
  the 
  hatching- 
  work 
  at 
  Wood's 
  Holl 
  were 
  iron- 
  

   rust 
  in 
  the 
  pipes 
  and 
  sediment 
  from 
  the 
  harbor. 
  The 
  difficulty 
  with 
  the 
  

   iron-rust 
  was 
  overcome 
  to 
  some 
  extent 
  by 
  the 
  substitution 
  of 
  cement- 
  

   lined 
  pipes, 
  but 
  the 
  eggs 
  were 
  saved 
  from 
  injury 
  by 
  the 
  sediment 
  only 
  

   by 
  the 
  exercise 
  of 
  constant 
  care. 
  The 
  experiments 
  made 
  so 
  late 
  in 
  the 
  

   season 
  at 
  Wood's 
  Holl 
  may 
  be 
  regarded 
  as 
  fairly 
  successful, 
  but 
  had 
  

   they 
  been 
  undertaken 
  during 
  the 
  proper 
  hatching 
  season 
  more 
  satis- 
  

   factory 
  results 
  would 
  undoubtedly 
  have 
  been 
  reached. 
  The 
  principal 
  

   object 
  in 
  hatching 
  the 
  eggs 
  in 
  jars 
  is 
  to 
  have 
  the 
  embryos 
  under 
  con- 
  

   trol 
  immediately 
  after 
  hatching; 
  but 
  the 
  best 
  methods 
  of 
  caring 
  for 
  the 
  

   young 
  have 
  yet 
  to 
  be 
  decided 
  upon, 
  and 
  present 
  an 
  interesting 
  problem 
  

   for 
  future 
  investigation. 
  It 
  is 
  not 
  known 
  how 
  long 
  the 
  young 
  can 
  be 
  

   kept 
  in 
  confinement, 
  nor 
  at 
  what 
  age 
  it 
  would 
  be 
  advisable 
  to 
  turn 
  them 
  

   over 
  to 
  the 
  care 
  of 
  nature, 
  but 
  it 
  will 
  probably 
  be 
  possible 
  to 
  transport 
  

   them 
  alive 
  to 
  any 
  other 
  portion 
  of 
  the 
  New 
  England 
  coast. 
  

  

  Summary 
  of 
  distribution 
  offish 
  and 
  eggs 
  oy 
  the 
  U. 
  S. 
  Fish 
  Commission 
  during 
  the 
  season 
  of 
  

  

  1685. 
  

  

  Wbitefisb 
  (Coregonus 
  clupeiformis) 
  : 
  

  

  Eggs 
  *42,800,000 
  

  

  Fry 
  t92,000,000 
  

  

  Brook 
  trout 
  {Salrelinus 
  fontinalis) 
  : 
  

  

  Eggs 
  *145, 
  000 
  

  

  Fry 
  *25,000 
  

  

  Large 
  fish 
  *550 
  

  

  Lake 
  trout 
  ( 
  Salvelinus 
  namaycush) 
  : 
  

  

  Eggs 
  "1,031,000 
  

  

  Fry 
  *~r>, 
  500 
  

  

  Large 
  lisli 
  ** 
  1,791 
  

  

  Raiubow 
  trout 
  (Salmo 
  irideus) 
  : 
  

  

  Eggs 
  tfJ-1,000 
  

  

  Fry 
  **250 
  

  

  Large 
  fish 
  *t4,664 
  

  

  Atlantic 
  salmon 
  {Salmo 
  salar) 
  : 
  

  

  Eggs 
  '. 
  §1,251,500 
  

  

  Fry 
  ||419,550 
  

  

  Landlocked 
  salmon 
  {Salmo 
  salar 
  subsp. 
  seoago) 
  : 
  

  

  Eggs 
  $222,000 
  

  

  Fry 
  §§41,500 
  

  

  Brown 
  trout 
  {Salmo 
  fario) 
  : 
  

  

  Fry 
  ||28,900 
  

  

  * 
  From 
  Nortbville 
  Station. 
  

  

  t 
  From 
  Nortbville 
  and 
  Alpena 
  Stations. 
  

  

  } 
  From 
  Grand 
  Lake 
  Stream 
  Station. 
  

  

  § 
  From 
  Bucksport 
  Station. 
  

  

  || 
  From 
  Cold 
  Spring 
  Harbor 
  Station. 
  

  

  ** 
  From 
  Wytheville 
  Station. 
  

  

  thOf 
  these 
  5,000 
  were 
  from 
  Nortbville, 
  Station, 
  246,000 
  from 
  McClond 
  River 
  Station, 
  

   and 
  30,000 
  from 
  Wytheville 
  Station. 
  

  

  if 
  Of 
  these 
  3,364 
  were 
  from 
  Nortbville 
  Station, 
  and 
  1,300 
  from 
  Wytheville 
  Station. 
  

  

  §§ 
  Of 
  these 
  22,000 
  were 
  from 
  Nortbville 
  Station, 
  and 
  19,500 
  from 
  Cold 
  Spring 
  Harbor 
  

   Station. 
  

  

  