U. S. B. F.— Doc. 



Plate XIX. 



FIG. 1.— LARGE OYSTER HOUSE AT PROVIDENCE, R. I., SHOWING DREDGE BOAT 

 UNLOADING OYSTERS AT RIGHT AND ELEVATOR TO SHELL PILE AT LEFT. 



FIG. 2.— UNLOADING OYSTERS FROM THE BOAT AT ONE OF THE LARGE OYSTER 

 HOUSES BY MEANS OF A BELT CONVEYER. 



