igo 



ANIMALS OF LAND AND SEA 



soon gives forth a most offensive smell, proclaiming the organic 

 matter it contains. 



This mud is swallowed by many of the bottom animals, 

 particularly by all of the numerous echinoderms except the 



55'5 



Figs. 552-559. Brachiopods, a Chaetognath, 

 and a Sea-urchin. 



For explanations of the figures see p. xxLx. 



crinoids, and by many of the crustaceans, which digest the 

 organic matter out of it, living in the same way that some of 

 their relatives do along the shores. For the other animals, such 

 as the sponges, sea-squirts, stalked crinoids and coelenterates, 

 intermediates are necessary to make this food available, and 



