92 THAT 



would not swim away, but when the parent fish 

 was held in the water in a favourable position, 

 the young would again enter the pouch." The 

 modes in which the eggs are introduced to the 

 pouch of the male is unknown. It is singular 

 that in all cases in which fishes attend their 

 young, the male performs this duty. 



The gray mullet (JSIugil capitd) , 

 12, displays remarkable sagacity. 

 "When enclosed in a net with other 

 fish, it will swim all round the 



12 



3C2. 



upper and lower limits of the en- 

 closure, and examine carefully 

 every chance of escape ; finding- 

 no possible means of getting out, 

 it will retire into the centre of 

 the enclosure, and then, with a 

 swift dash, will spring over the 

 net, and get away, while other 



363. 



fiah remain captives. Gray mul- 

 let have been tamed, and ren- 



's IT; 



dered familiar with a certain call 

 to which they would come. 



Sharks, 13, often follow in the 

 track of vessels, waiting for any- 

 thing that may be thrown over- 

 board; and should a man fall 

 into- the sea they are ferocious 

 enough to attack and kill him. 

 They swim with great velocity, 

 and sport around a fast-sail- 

 ing ship without any apparent 

 exertion. JEels will frequently 

 quit the water on dewy and wet 

 nights, and travel a considerable 

 distance over the land, searching 

 for frogs and worms. 



The salmon, 14, is a migratory* 



14 



364. 



fish, existing one part of the year 

 in fresh water, the other in the 

 sea. They ascend the rivers for 

 the purpose of depositing its 

 eggs, or spawning, and so strong 

 is the instinct to leave their eggs 

 far up the rivers, that if inter- 

 rupted in their course by rapids 

 or weirs, they will leap over them, 

 though eight or ten feet high; 

 and though they fail at first, will 

 renew the attempt, with increased 

 vigour. They have been known 

 to descend over a fall of as much 

 as thirty feet, and to leap over a 

 dry rock of considerable height, 



• Accustomed to remove from one state to another. 



