xs 



FIG. 299. The early development of the salmon. 



i, The fertilised egg ; 2, the egg just before hatching ; 3, the newly 

 hatched salmon ; 4 and 5, the larval salmon nourished from yolk- 

 sac (y.s.) which is diminishing while the fish is increasing in 

 size ; 6, the salmon with yolk absorbed (about six weeks old). 

 The small figures to the right indicate the actual sizes. 



37 



