506 THE UNIVERSE. 



the , lakes of Italy, attains the same end, but by a method 

 less ingenious, and marked, so to speak, by a certain degree 

 of coarseness. It lives at the bottom of the water, but 

 when the hour of fecundation has struck, its large stem 

 breaks short off close to the root, and all at once it rises to 

 float on the surface of the waves. 



Thus by difl^erent ways does nature arrive at her 

 ends. 



