TrocJius. 61' 



otlierj wliicli is free_, you will see coiled in a 

 beautiful spiral maimer^ witMn tlie cavity of tlie 

 stomacli. 



By allowing this tiny tkread to stretcli itself on 

 a plate of glass^ wliicli is easily done by putting a 

 drop of water on it firsts which may then be drained 

 oflf and dried^ you will find that it is in reality an 

 excessively delicate ribbon of transparent cartila- 

 ginous substance or membrane^ on which are set 

 spinous teeth of glassy texture and brilliancy. They 

 are perfectly regular^ and arranged in three rows^ of 

 which the middle ones are three-pointed^ while on 

 each of the outer rows a three-pointed tooth alter- 

 nates with a larger curved one^ somewhat boat-like 

 in form. All the teeth project from the surface of 

 the tongue on hooked curves^ and all point in the 

 same direction.''^ 



And with this curious piece of mechanism the 

 little Winkle works away and cuts down swathe 

 after swathe of the minute vegetation, just as a 

 mower does the meadow grass; only the mollusk 

 eats as he goeSj and so gets payment for his labour; 

 the man has it in another and to him more useful 

 form. We might tell a very long story about these 

 Tops and Winkles^ which are nearly related to each 

 other^ but must now pass on to describe the rest of 



5 



