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  bass, 
  white 
  perch, 
  the 
  silver 
  gars, 
  the 
  clam 
  and 
  the 
  oyster, 
  

   have 
  been 
  obtained 
  under 
  the 
  auspices 
  of 
  the 
  Commission. 
  

  

  Many 
  other 
  problems 
  have 
  been 
  worked 
  out 
  by 
  special- 
  

   ists 
  for 
  the 
  Commission, 
  the 
  details 
  of 
  which 
  are 
  described 
  

   in 
  the 
  reports. 
  One 
  of 
  these, 
  for 
  instance, 
  has 
  been 
  the 
  

   determination 
  of 
  the 
  cause 
  of 
  the 
  reddening 
  of 
  salt 
  codfish, 
  

   so 
  injurious 
  to 
  commerce. 
  Prof. 
  Farlow 
  found 
  this 
  to 
  be 
  

   due 
  to 
  the 
  presence 
  of 
  a 
  species 
  of 
  alga 
  in 
  the 
  kind 
  of 
  

   salt 
  in 
  common 
  use, 
  and 
  gave 
  instructions 
  by 
  which 
  the 
  

   plague 
  has 
  been 
  greatly 
  lessened. 
  

  

  An 
  investigation 
  into 
  the 
  chemical 
  composition 
  and 
  

   nutritive 
  value 
  of 
  fish 
  as 
  compared 
  with 
  other 
  food 
  is 
  still 
  

   in 
  progress, 
  and 
  all 
  American 
  food 
  fishes 
  are 
  being 
  

   analysed 
  by 
  Professor 
  Atwater. 
  

  

  The 
  temperature 
  of 
  the 
  water, 
  in 
  its 
  relation 
  to 
  the 
  move- 
  

   ments 
  of 
  fish, 
  has 
  from 
  the 
  first 
  received 
  special 
  attention. 
  

   Observations 
  are 
  made 
  regularly 
  during 
  the 
  summer 
  work, 
  

   and 
  at 
  the 
  various 
  hatching 
  stations. 
  At 
  the 
  instance 
  of 
  

   the 
  Commissioner, 
  an 
  extensive 
  series 
  of 
  observations 
  have 
  

   for 
  several 
  years 
  been 
  made 
  under 
  the 
  direction 
  of 
  the 
  chief 
  

   signal 
  officer 
  of 
  the 
  army, 
  at 
  lighthouses, 
  lightships, 
  life- 
  

   saving 
  and 
  signal 
  stations, 
  carefully 
  chosen, 
  along 
  the 
  whole 
  

   coast. 
  A 
  number 
  of 
  fishing 
  schooners 
  and 
  steamers 
  have 
  

   kept 
  similar 
  records. 
  One 
  practical 
  result 
  of 
  the 
  study 
  of 
  

   these 
  observations 
  has 
  been 
  the 
  demonstration 
  of 
  the 
  cause 
  

   of 
  the 
  failure 
  of 
  the 
  menhaden 
  fisheries 
  on 
  the 
  coast 
  of 
  

   Maine 
  in 
  1879 
  — 
  a 
  failure 
  on 
  account 
  of 
  which 
  nearly 
  2000 
  

   persons 
  were 
  thrown 
  out 
  of 
  employment. 
  

  

  A 
  most 
  remarkable 
  series 
  of 
  contributions 
  have 
  been 
  

   received 
  from 
  the 
  fishermen 
  of 
  Cape 
  Ann. 
  When 
  the 
  Fish 
  

   Commission 
  had 
  its 
  head-quarters 
  at 
  Gloucester, 
  in 
  1878, 
  

   a 
  general 
  interest 
  in 
  the 
  zoological 
  work 
  sprang 
  up 
  among 
  

   the 
  crews 
  of 
  the 
  fishing 
  vessels, 
  and 
  since 
  that 
  time 
  they 
  

  

  