Fic. 299.—The early development of the salmon. 
x, 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. 
