78 INDEX. 



BIVALVES. 



PAGE. 



The Oyster . 41 



Pearls . . . . . . . . . 49 



The Mussel and the Cockle ..... 51 



ScaUop Shells 57 



Limpits ......... 59 



Eock-borers . . . " . . . . . . 61 



MULTIVALVES. 



The Chitons 63 



Barnacles . . . . . . . . . 64 



Cuttle Fish 67 



Nautilus and Anuuonite ...... 71 



