﻿75 
  

  

  It 
  is 
  a 
  coincidence 
  at 
  least 
  worthy 
  of 
  notice, 
  tliat 
  with 
  

   both 
  species 
  the 
  embi-yos 
  have 
  disappeared 
  at 
  about 
  the 
  

   same 
  stage 
  of 
  development. 
  

  

  All 
  published 
  accounts 
  of 
  the 
  development 
  of 
  the 
  Euro- 
  

   pean 
  03\ster 
  agree 
  in 
  asserting 
  or 
  assuming 
  that 
  the 
  im- 
  

   pregnation 
  of 
  the 
  ova 
  occurs 
  while 
  they 
  are 
  either 
  Avithin 
  

   the 
  ovaries 
  or 
  shell 
  of 
  the 
  parent, 
  and 
  that 
  consequently 
  

   artificial 
  fertilization 
  is 
  impossible 
  ; 
  this 
  supposition 
  my 
  

   experiment 
  effectually 
  disproves. 
  Again, 
  should 
  the 
  

   artiiicial 
  fertilization 
  of 
  the 
  eggs 
  and 
  subsequent 
  care 
  of 
  

   the 
  embryo 
  of 
  the 
  American 
  species 
  reach 
  such 
  a 
  state 
  of 
  

   perfection 
  as 
  to 
  make 
  the 
  process 
  an 
  addition 
  to 
  oyster 
  

   culture, 
  and 
  one 
  of 
  practical 
  importance, 
  the 
  agreement 
  

   of 
  the 
  European 
  species 
  with 
  our 
  own 
  in 
  the 
  early 
  stages 
  

   of 
  development, 
  will 
  indicate 
  a 
  method 
  by 
  which 
  the 
  

   supply 
  of 
  oysters 
  may 
  be 
  increased 
  in 
  localities 
  whose 
  

   need 
  is 
  even 
  now 
  far 
  greater 
  than 
  our 
  own. 
  

  

  In 
  conclusion, 
  I 
  must 
  express 
  my 
  indebtedness 
  to 
  the 
  

   paper 
  of 
  Dr. 
  Brooks 
  upon 
  the 
  develcjpment 
  of 
  the 
  Ameri- 
  

   can 
  oyster, 
  to 
  which 
  I 
  have 
  alluded, 
  and 
  without 
  which 
  

   I 
  should 
  have 
  been 
  somewhat 
  at 
  a 
  loss 
  for 
  a 
  means 
  of 
  

   registering 
  the 
  various 
  changes 
  which 
  I 
  witnessed 
  in 
  the 
  

   development 
  of 
  the 
  European 
  oyster. 
  

  

  Respectfully, 
  FRANCIS 
  WINSLOW, 
  

  

  Master 
  U. 
  S. 
  Navy. 
  

  

  U. 
  S. 
  Ship 
  ''Saratoga;' 
  at 
  Sea, 
  July 
  6th, 
  1880. 
  

  

  