252 



ALTERNATE GENERATIONS. 



by which it began its life as a free animal. The 

 lobes are gradually obliterated, so that the mar- 







o 



Aurelia flavidula, the common white Jelly-Fish of our sea-shores, seen from 

 above : c, mouth ; e e e eee, eyes ; mm mm, lobes or curtain of the mouth 

 in outlines -, o o o, ovaries ; 1 1 1 , tentacles ; w w, ramified tubes. 



gin becomes almost an unbroken circle. The 

 eight eyes were, as I have said, at the bottom of 

 depressions in the centre of the several lobes ; 

 but, by the equalizing of the marginal line, the 

 gradual levelling, as it were, of all the inequali- 

 ties of the edge, the eyes are pushed out, and 

 occupy eight spots on the margin, where a faint 

 indentation only marks what was before a deep 

 cut in the lobe. The eight tubes of the lobes 

 have extended in like manner to the edge, and 



