﻿INVESTIGATIONS 
  FOR 
  THE 
  PROMOTION 
  OF 
  THE 
  

   OYSTER 
  INDUSTRY 
  OF 
  NORTH 
  OAROLINA. 
  

  

  CASWELL 
  GRAVE, 
  Ph. 
  D., 
  

  

  Director 
  of 
  Fislieries 
  Laboratory, 
  Beaufort, 
  N. 
  C 
  

  

  247 
  

  

  