﻿164 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  hatching 
  in 
  the 
  rearing 
  apparatus. 
  Several 
  "berried 
  lobsters" 
  were 
  

   brought 
  from 
  Newport, 
  the 
  eggs 
  stripped 
  in 
  the 
  usual 
  manner 
  and 
  

   placed 
  in 
  one 
  of 
  the 
  scrim 
  cylinders, 
  and 
  the 
  propeller 
  was 
  adjusted 
  to 
  

   create 
  a 
  current 
  strong 
  enough 
  to 
  lift 
  the 
  eggs 
  from 
  the 
  bottom. 
  

  

  The 
  results 
  surpassed 
  our 
  expectations, 
  for 
  although 
  constructed 
  

   primaril}^ 
  for 
  rearing 
  and 
  brooding 
  the 
  fry, 
  the 
  stirring 
  apparatus 
  

   proved 
  admirably 
  adapted 
  for 
  hatching 
  the 
  eggs, 
  and 
  as 
  a 
  hatching 
  

   device 
  merely 
  was 
  decidedly 
  superior 
  to 
  the 
  McDonald 
  hatching 
  jar. 
  

   In 
  the 
  latter 
  the 
  eggs 
  and 
  young 
  lobsters 
  are 
  subjected 
  to 
  a 
  protracted 
  

   mauling. 
  If 
  examined 
  under 
  a 
  microscope, 
  many 
  are 
  found 
  to 
  be 
  

   mutilated, 
  appendages 
  are 
  missing, 
  a 
  gill 
  torn 
  off, 
  or 
  an 
  eye 
  indented. 
  

   Such 
  a 
  lobster 
  must 
  be 
  seriously 
  handicapped 
  from 
  the 
  very 
  begin- 
  

   ning. 
  The 
  fry 
  hatched 
  in 
  the 
  bags 
  are 
  not 
  subject 
  to 
  such 
  violent 
  

   treatment, 
  are 
  probably 
  stronger 
  and 
  more 
  healthy, 
  and 
  their 
  chances 
  

   of 
  living 
  are 
  materially 
  increased. 
  The 
  bags 
  were 
  of 
  a 
  convenient 
  

   size 
  and 
  could 
  easily 
  be 
  removed 
  and 
  cleaned. 
  To 
  separate 
  the 
  fry 
  

   from 
  the 
  eggs 
  all 
  that 
  was 
  necessary 
  was 
  to 
  stop 
  the 
  fan, 
  when 
  the 
  

   eggs 
  sank 
  quickly 
  to 
  the 
  bottom, 
  leaving 
  the 
  active 
  fry 
  swimming 
  

   near 
  the 
  surface. 
  These 
  could 
  be 
  easily 
  removed, 
  and 
  expeditiously 
  

   transferred 
  to 
  the 
  rearing 
  bags. 
  

  

  SUMMARY 
  OF 
  RESULTS 
  OF 
  THE 
  WORK 
  OF 
  1901. 
  

  

  1. 
  The 
  value 
  of 
  artificial 
  agitation 
  of 
  the 
  water 
  was 
  established. 
  

  

  2. 
  It 
  was 
  proved 
  by 
  experiments 
  that 
  from 
  16 
  to 
  50 
  per 
  cent 
  of 
  the 
  

   fry 
  could 
  be 
  carried 
  through 
  three 
  molts. 
  

  

  3. 
  It 
  was 
  shown 
  that 
  apparatus 
  of 
  large 
  capacity 
  could 
  be 
  built 
  and 
  

   maintained 
  at 
  small 
  expense. 
  

  

  4. 
  The 
  rearing 
  apparatus 
  was 
  found 
  to 
  be 
  also 
  a 
  most 
  efficient 
  hatch- 
  

   ing 
  apparatus, 
  far 
  superior 
  to 
  the 
  McDonald 
  or 
  Chester 
  jars. 
  

  

  5. 
  Data 
  for 
  guidance 
  of 
  future 
  experiments 
  were 
  secured: 
  

  

  (a) 
  It 
  is 
  important 
  to 
  remove 
  the 
  lobsterlings 
  from 
  the 
  brooding 
  

   bags 
  as 
  fast 
  as 
  they 
  appear. 
  Overcrowding 
  the 
  bags 
  with 
  fry 
  does 
  

   not 
  give 
  good 
  results. 
  

  

  (J) 
  Careful 
  attention 
  must 
  be 
  given 
  to 
  the 
  kind 
  and 
  amount 
  of 
  food, 
  

  

  WORK 
  DURING 
  1902. 
  

  

  Before 
  closing 
  its 
  work, 
  the 
  special 
  commission 
  wished 
  to 
  learn, 
  if 
  

   possible, 
  whether 
  agitation 
  of 
  the 
  water 
  would 
  prove 
  equally 
  success- 
  

   ful 
  in 
  other 
  localities. 
  It 
  was 
  also 
  desired 
  to 
  make 
  experiments 
  on 
  a 
  

   larger 
  scale 
  in 
  order 
  to 
  test 
  the 
  adaptability 
  of 
  the 
  apparatus. 
  

  

  Although, 
  on 
  account 
  of 
  the 
  greater 
  abundance 
  of 
  lobsters, 
  several 
  

   places 
  on 
  the 
  Maine 
  coast 
  or 
  near 
  the 
  Gloucester 
  hatchery 
  seemed 
  

   more 
  favorable 
  for 
  the 
  location 
  of 
  a 
  plant, 
  it 
  was 
  decided 
  to 
  establish 
  

   it 
  at 
  Woods 
  Hole, 
  for 
  the 
  following 
  reasons: 
  (1) 
  Owing 
  to 
  the 
  prox- 
  

  

  