Illustrations 



Cylinder Shells, Pond Snails, Midas's Ear and Tooth Shells 



Wood-boring Bivalves . 



Piddocks. Rock-borers 



Parts of a Hard-shell Clam 



Razor Clams and Other Clams 



The Old Clam Digger 



Rock-borers and Hard-shell Clams 



Soft-shell and Other Clams 



Clams Useful and Beautiful 



Clams and Cockles 



Wedge Shells and Tellens 



Giant Clams and Sunset Shells 



Cockles .... 



Rock Oysters and a Sea Clam 



One Valve of the Giant Clam of Australia, and Bear's Paw 

 Clam ...... 



Chestnut Crassatells, Tiger Lucina, Grooved Lunica, North- 

 ern Cardita, Waved Astarte, Broad-ribbed Cardita 



Fresh-water Mussels .... 



Fresh-water Mussels .... 



Making Pearl Buttons at Muscatine, Iowa 



Ark Shells and Others . 



Mussels 



Acres of Edible Mussels 



Wing Shells, Rock-dwellers and a Mussel 



Oysters of Tropical Seas . 



Pen Shells ... 



Thorny Oysters and Others 



Marine Bivalve Shells 



Scallops and a File Shell 



Scallop Shells 



Oysters and Jingle Shells 



The Oyster and Oystering on Great South 



Masses of Coon Oysters . 



Egg Cradle of the Paper Nautilus 



Chambered Nautilus 



Bay, Long Island 



279 

 282 

 283 

 307 

 320 

 321 

 322 

 323 

 334 

 335 

 336 



337 

 356 



357 

 364 



365 

 374 

 375 

 378 



379 

 388 

 389 

 396 



397 

 406 

 407 

 410 

 411 

 418 

 419 

 430 



431 

 458 



459 



