128 



NATURE STUDY 



chamber for a time. Then they attach themselves to 

 the tins of fish, and, after a semi-parasitic existence, 

 drop to the sand small adult mussels. 



BEAK, 



FOOT 'LINE OFGROWTft. 



TEETH. ^EAK. LIGAMENT. 



^ ^.jamiiiiillHiniinn' 



'MANTLE LIME. 



Keading and language lessons on the oyster and clam 

 will be particularly valuable after the lessons on the 

 mussel. 



LITERATURE 



Neptune. 



Hiawatha's Fishing. 

 Water Babies, Kingsley. 



The Readers, particularly Johonnot's, are full of interesting 

 accounts of fish, frogs, snails, and mussels. 



