OF SEA-ANEMONES. 



17 



* Organized Bodies are divided into 



+ The Animal KiNODOii 

 Feed on organic substances. 



I 

 The "V egetable Kingdom 



Feed on inorganic substances. 



f The Animal Kingdom is divided into 



Vertebrates. 



Animals pos- 

 sessing a back- 

 bone, containing 

 a nen^ous cord, 

 enlai-ged at its 

 extremity into a 

 mass called a 

 brain, in a re- 

 ceptacle or skull. 



e. g. Man, fish, 

 birds, reptiles. 



I 

 Articulates. 



Animals usually 

 with a jointed ex- 

 ternal skeleton ; 

 nen^es in knots 

 disposed symme- 

 trically through- 

 out the body. 



^.<7. Worms, cen- 

 tipedes, insects, 

 crabs, &c. 



I 

 Molluscs. 



No limbs, soft 

 body; sometimes 

 covered with 



shell ; nen-es 

 in masses dis- 

 posed irregularly 

 throughout the 

 body. 



e. g. Snails, oys- 

 ters. 



\ Radiates. 



Organs usually 

 arranged in raij:^ 

 round a centre. 



e. g. Sea -ane- 

 mones, star-lish, 

 sea-blubber, hy- 

 draform polyps, 

 &c. 



+ Radiates are divided into several Classes, among 

 zvhich are 



I 

 § Polyps, or True 



Zoophytes. 



Animals fixed on 

 stems, or solitary, with 

 non-ciliated tentacles 

 grasping their food. 



e. g. Sea - anemones, 

 corals, Hydra, Sertu- 

 larite, &c. 



I 



ACALEPHS. 



" Stinging - animals," 

 mo%ing freely in the 

 sea. 

 e.g. Sea-blubber. 



ECHINODERMS. 



" Prickly - skinned " 

 animals, usually moving 

 freely. 



e.g. Star -fish. Sea- 

 urchins, &c. 



c 3 



