262 MR. A. H. RE ID 



the eggs are known as eyed ova. Then, after lying witli 

 the running water continually washing the deposit for 

 about 6 weeks, the youngsters bore their way through 

 the shells of the ova and freeing themselves become 

 alevins, each with the yoke of the egg hanging from its 

 underpart like a sac or bag. They remain in this state, 

 in the gravel, from three to six weeks according to the 

 temperature of the water, obtaining nourishment by ab- 

 sorbing the contents of the yolk-sac; \iiien that is ex- 

 hausted they free themselves from the gravel and appear 

 as minute fish about 1^'' long, seeking food for them- 

 selves. 

 • The same process applies to all varieties of trout, 

 and it has been suggested, that hybridization is taking 

 place between the Browns and Kainbows naturally. 

 There is no absolute proof, but specimens have been 

 killed bearing such peculiar colourings and markings that 

 the possibility has naturally suggested itself. 



Loch Levex Trout. 



The Loch Leveu Trout sometimes known as {Salmo 

 levensis) has generally a more silvery colouration of 

 the belly than has the Brown, fewer or no red spots, and 

 the flesh is pinkish rather than yellowish red as in the 

 Brown Trout. They seem to have disappeared from the 

 Lowrens River where they were placed or probably they 

 have been transformed into the Brown variety, for the 

 Loch Leven trout is merely a variety of the species S. 

 fario. 



Rainbow Trout. 



The Rainbow Trout i Salmo Irideiis) of North America 

 has increased more than any other variety in our waters, 

 probably due to the fact that water of a high temperature 

 does not affect them seriously as it does the S. fario. 

 The upper part of the body is of a blueish or purple hue 



