FISHES DIAGRAM 5 103 



similar to that which is produced by a violent blow of a stick on 

 the shoulder. 



The ft/lark*. These are not all so large as those which can 

 seize the l<><rs of a bather in the sea, and tear off the flesh. 



Shark. 



Much smaller fish, known as doyfah, are true sharks except in size. 

 All fishes of this kind have months furnished, like those of the 

 rays, with several rows of teeth, only the sharks have them very 

 long and pointed. It is with these that they tear the prey which 

 they cannot swallow at a gulp. At the back of the teeth which 

 they use, others always grow, so that if by accident some are 

 broken or lost, or worn out, they are soon replaced and the gaps 

 filled up. These animals are always ravenous, and they are seen 

 to follow ships to devour whatever is thrown into the sea. It is 

 then sufficient to fasten a piece of meat to a strong hook at- 

 tached to a chain, to catch them ; if a cord were used, it might 

 be cut by their teeth. 



The Lamprey. We shall finish the list of fishes, and of the 

 cartilaginous fishes in particular, with the lamprey. It has a body 

 like? that of an eel, but it looks as if it had no 

 head. It has in front only a large sucker, 

 Head of Lamprey ^th which it attaches itself to rocks like a 

 great leech. 



The Hippocampus. Certain fishes are so called 

 from a Greek word meaning horse, because their 

 head somewhat resembles that of a horse. They 

 swim by means of a small fin on the back, and 

 preserve the singular attitude which is represented 

 in the figure. At other times they remain straight, 

 with their tail rolled round some marine plant. 

 Hippocampus. 



