CHAPTER 11. 



HO^V THE FISH DEPOSITS HER SPAWN. 



The word " eggs " necessarily implies the 

 word " nest/' Let us now examine the man- 

 ner in which the fish deposits her eggs, and 

 also the nest — for we may fairly call them 

 nests even though they be only a heap of 

 stones — which the parents provide for them. 

 Birds build with twigs and other vegetable 

 material. The salmon and trout can make 

 no use of these materials, so they deposit 

 them among stones. Other fish, especially sea 

 fish, make use of vegetable material, either 



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