﻿REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  117 
  

  

  The 
  laboratory 
  was 
  in 
  charge 
  of 
  Dr. 
  James 
  I. 
  Peck, 
  of 
  Williams 
  

   College. 
  The 
  others 
  in 
  attendance 
  were 
  as 
  follows: 
  

  

  Dr. 
  William 
  Patten, 
  of 
  Dartmouth 
  College; 
  J^r. 
  Henry 
  Y. 
  Wilson, 
  of 
  

   the 
  University 
  of 
  North 
  Carolina; 
  Mr. 
  James 
  E. 
  Peabody 
  and 
  j\[r. 
  S. 
  

   Gato, 
  of 
  Harvard 
  University; 
  Mr. 
  TTlric 
  Dahlgren, 
  of 
  Princeton 
  Uni- 
  

   versity; 
  Mr. 
  George 
  Lefevre, 
  Mr. 
  Hubert 
  L. 
  Clark, 
  and 
  Mr. 
  Arthur 
  

   L. 
  Lamb, 
  of 
  Johns 
  Hopkins 
  University; 
  Mr. 
  John 
  A. 
  Sampson, 
  of 
  Johns 
  

   Hopkins 
  Medical 
  School; 
  Dr. 
  Ira 
  Van 
  Gieson 
  and 
  Mr. 
  Israel 
  Strauss, 
  

   of 
  the 
  College 
  of 
  Physicians 
  and 
  Surgeons, 
  Kew 
  York; 
  Mr. 
  J. 
  R. 
  Slon- 
  

   aker, 
  of 
  Clark 
  University; 
  Dr. 
  Lewis 
  Murbach, 
  of 
  Berkey, 
  Ohio; 
  Mr. 
  

   Alvin 
  Davison, 
  of 
  Jjafayette 
  College; 
  Mr. 
  Herbert 
  Tetlow, 
  of 
  Adelbert 
  

   College; 
  Dr. 
  Thomas 
  H. 
  Montgomery, 
  jr., 
  of 
  the 
  Wistar 
  Institute 
  of 
  

   Anatomy. 
  Philadelphia; 
  Mr. 
  Maurice 
  Bigelow, 
  Mr. 
  Charles 
  Hazzard, 
  

   and 
  Mr. 
  W. 
  S. 
  N'ickerson, 
  of 
  l^orth 
  western 
  University; 
  Mr. 
  William 
  H. 
  

   Dudley, 
  of 
  Lake 
  Forest 
  University; 
  Mr. 
  N. 
  R. 
  Harrington, 
  of 
  Columbia 
  

   University; 
  Mr. 
  E. 
  R. 
  Boyer, 
  Dr. 
  H. 
  S. 
  Pepoon, 
  Mr. 
  Frederic 
  C. 
  Lucas, 
  

   and 
  Mr. 
  W. 
  Whitney, 
  of 
  the 
  high 
  schools, 
  Chicago; 
  Dr. 
  Mary 
  A. 
  

   Schively 
  and 
  Miss 
  Alice 
  H. 
  Beckler, 
  of 
  Philadelphia; 
  Miss 
  Bessie 
  Y. 
  

   Gaines, 
  of 
  Adelphi 
  Academy, 
  Brooklyn; 
  Mr. 
  John 
  1. 
  France, 
  of 
  Johns- 
  

   town, 
  N. 
  Y. 
  

  

  The 
  researches 
  carried 
  on 
  by 
  Dr. 
  Peck 
  were 
  undertaken 
  in 
  the 
  inter- 
  

   est 
  of 
  the 
  Commission, 
  and 
  related 
  to 
  the 
  food 
  and 
  feeding 
  habits 
  of 
  the 
  

   younger 
  stages 
  of 
  a 
  large 
  number 
  of 
  the 
  important 
  food- 
  fishes 
  of 
  the 
  

   region. 
  The 
  work 
  was 
  in 
  continuance 
  of 
  studies 
  which 
  have 
  now 
  been 
  

   in 
  i)rogress 
  during 
  three 
  consecutive 
  seasons, 
  the 
  earlier 
  results 
  being 
  

   referred 
  to 
  in 
  previous 
  reports. 
  This 
  year's 
  inquiries 
  had 
  reference 
  

   mainly 
  to 
  the 
  length 
  of 
  the 
  period 
  elapsing 
  from 
  the 
  hatching 
  of 
  the 
  

   egg 
  until 
  the 
  young 
  fish 
  begins 
  to 
  feed 
  and 
  to 
  the 
  character 
  of 
  its 
  first 
  

   food, 
  subjects 
  of 
  great 
  imi)ortance 
  in 
  respect 
  to 
  fish-cultural 
  methods. 
  

  

  Other 
  investigations 
  which 
  may 
  be 
  noted 
  in 
  this 
  connection 
  are 
  the 
  

   following: 
  Dr. 
  H. 
  Y. 
  Wilson 
  was 
  engaged 
  in 
  the 
  preparation 
  of 
  a 
  report 
  

   upon 
  marine 
  sponges 
  collected 
  by 
  the 
  steamer 
  Albatross. 
  Dr. 
  Patten 
  

   continued 
  his 
  studies 
  on 
  the 
  central 
  nervous 
  system 
  of 
  the 
  young 
  horse- 
  

   shoe-crab 
  and 
  of 
  the 
  young 
  of 
  several 
  ];inds 
  of 
  fishes. 
  1 
  )r. 
  Montgomery 
  

   was 
  occupied 
  with 
  researches 
  on 
  the 
  anatomy, 
  histology, 
  and 
  develoji- 
  

   ment 
  of 
  Nemertean 
  worms, 
  and 
  completed, 
  while 
  at 
  the 
  station, 
  a 
  paper 
  

   on 
  the 
  origin 
  of 
  the 
  land 
  and 
  fresh-water 
  sijecies 
  of 
  that 
  group. 
  Dr. 
  Mur- 
  

   bach 
  studied 
  the 
  embryology 
  and 
  tlie 
  nettling 
  organs 
  of 
  the 
  JNIedusa^ 
  

   Dr. 
  Van 
  Gieson's 
  investigations 
  were 
  directed 
  toward 
  determining 
  the 
  

   <liff'erence 
  in 
  structure 
  between 
  the 
  sensory 
  and 
  motor 
  ganglion 
  cells 
  of 
  

   both 
  vertebrates 
  and 
  invertebrates, 
  in 
  which 
  work 
  he 
  secured 
  the 
  coop- 
  

   eration 
  of 
  several 
  of 
  the 
  students 
  present 
  at 
  the 
  laboratory, 
  which 
  gave 
  

   the 
  opportunity 
  for 
  extending 
  the 
  observations 
  to 
  many 
  forms 
  repre- 
  

   senting 
  a 
  number 
  of 
  different 
  groups. 
  Besides 
  these 
  a 
  great 
  variety 
  of 
  

   subjects 
  was 
  represented 
  by 
  the 
  inquiries 
  of 
  other 
  investigators 
  and 
  

   students, 
  many 
  of 
  which 
  relate 
  to 
  structural 
  features 
  among 
  the 
  useful 
  

   fishes 
  and 
  invertebrates. 
  In 
  this 
  manner 
  and 
  by 
  such 
  voluntary 
  labors 
  

   important 
  facts, 
  which 
  ultimately 
  derive 
  practical 
  significance 
  at 
  the 
  

  

  