Divisions of Life and Time 



torn. This group of shell-bearing creatures is 

 most ancient, and held a high place during the 

 early history of the world, so that it is fre- 

 quently necessary to refer to them. 



Below the worms are the Ccelenterata, in- 

 cluding a large number of lowly but beautiful 

 animals, such as the jellyfish, Portuguese man- 

 of-war, sea - anemones, and the coral - forming 



Shells of brachiopods, one showing the loop, the other the 

 opening for the passage of the stalk. 



polyps so persistently and wrongly called in- 

 sects, x\s may be inferred from the names, the 

 vast majority of these are marine ; most of 

 them have a long pedigree, dating back to the 

 beginning of the recorded history of life, and 

 the corals have played an important part in 

 building up the land, and are still industriously 



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