"Ly^/vgf 



Figure 3. — "Long Island" hydraulic bar clam dredge of the type which became popular with the Long Island 

 clammers. (Drawn by Carl Rich after C. E. Petite and P. "w. G. McMuUon, Fish. Res. Board Can., Bull 102, 

 Ottawa, 1955.) 



SLED 



DREDGE 



KNIFE 



Figure 4. — Early model hydraulic dredge .showing sled under bag, one of the early modifications which led to 

 the development of the standard dredge with its after-cage built of steel bars. 



