GENERAL DESCRIPTION OF ANIMALS. 



Fig. 10. — Squid. 



Fig. II. — Land Snail. 



Fig. 12. — Snail Shell. 



Fig. 13. — Fresh-water Mussel. 



Other kinds of animals, as Squids, Snails, Mussels, 

 Clams, and Oysters, have neither a backbone nor a 

 jointed body; but the whole body is soft, usually 

 with a shell outside, but sometimes without a shell, 

 and they are called MOLLUSKS, from a word which 

 means soft. See Figures 10-13. 



