I N D E X 
I!.. 
2 1 
12 Lettered Ark, or Cockle. 
13 Spotted Ark. 
O I S T E R, 
1 Common Englijh S c a l l o p. 
2 The Mediterranean Scallop,^ 
7 Ducal Mantle, 
9 Royal Mande, 
®X 
IO Ducks-Foot. 
