﻿Bihanétill 
  K.Vet. 
  AJcad.Hand. 
  Bd. 
  6 
  N?21 
  

  

  Plate 
  IV. 
  

  

  Bottom 
  Specimen 
  Catcher 
  

  

  Invent&cl 
  Irf 
  

  

  Tk.ATAA'idss 
  on 
  

   ChLef 
  of 
  the 
  HydrograplvLC 
  Depcu-tment 
  

   Y) 
  StooWiolm.. 
  

  

  SuLe. 
  -vve-ws 
  

  

  ScaZe- 
  -r 
  

  

  oin? 
  

  

  