DEVELOPMENT OF YOUNG FISH. 105 



the body. I have already ascertained one 

 fact, and this (as the question has frequently 

 been put to me) I shall venture now to 

 mention. The eggs do not grow i. e., they 

 do not increase in circumference or in 

 diameter but the fish inside them most 

 certainly increases in bulk, till at last it 

 becomes so large that the egg-shell suddenly 

 bursts, and out comes the young fish. 



I have never yet seen a more beautiful 

 sight than the gradual development of the 

 young salmon and trout. "We begin with a 

 globule of albumen (or white of egg) ; we 

 see within it a faint line, and two black spots ; 

 day by day these become larger till the 

 young fish is born. Time goes on ; the 

 umbilical vesicle is absorbed, the colour 

 appears on the scales, the long single crests 



