﻿Report 
  U. 
  S. 
  F. 
  C. 
  1885.— 
  Ryder. 
  Oyster 
  culture. 
  

  

  PLATE 
  II. 
  

  

  i-H 
  

   Pi 
  

  

  b^ 
  

  

  .6" 
  Z 
  

  

  — 
  -fH- 
  

  

  1 
  

  

  