LIST OF ILLUSTRATIONS 



XI 



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39- 

 40. 

 41. 

 42. 

 43- 

 44- 



45- 

 46. 



47- 

 48. 



49- 

 50. 

 31- 



53- 

 54- 

 55- 

 5(^- 

 37- 

 5«- 

 3'J- 



60. 

 61. 

 62. 



I'lan 



Scale of a very small Norwegian Sea-trout . . . . . 



Scale of a small Norwegian Sea-trout 



Scale of Sea-trout indicating tiiat the fish spawned as a whitling - 



Scale of Sea-trout indicating that the lish liad spawned as a wiiitling 



Scale of Sea-trout indicating that the fish had spawned as a wiiitling 



Sc£ile of Sea-trout indicating that tlu- tish liad not spawned as a 

 whitling 



Scale of Sea-trout indicating tiiat the tisli did not remain over 

 winter in the sea after its descent as a smolt 



Scale of Sea-trout indicating tliat the tish passed i winter in the se. 

 after its descent as a smolt 



Scale of Sea-trout indicating tliat the fish jxissed 2 winters in the 

 sea after its descent as a smolt 



Scale of Sea-trout indicating tliat the fisii passed 3 winters in the 

 sea after its descent as a smolt 



Scale of Sea-trout which, although 1 1 vears old, weighed onlv 2^ lb 



A Salmon leaping at a fall 



A male Salmon in spawning dress 



A female and male Salmon on the eve of s])awning 



A male Sea-trout in spawning dress 



A female keli Sea-trout 



Scale of Sea-trout indicating spawning in 2 consecutive vears 



Scale of Sea-trout indicating spawning in 3 consecutive years 



Scale of Sea-trout indicating spawning in 4 consecutive vears 



Scale of Sea-trout indicating spawning in 5 consecutive vears 



Scale of Norwegian Sea-trout indicating spawning in 7 consecutive 

 years 



A Norwegian Sea-trout (ii|lb.) 



Scale of Sea-trout, recaptured when spawning in 3 consecutive years 

 Scale of Sea-trout indicating that tiie fish spent 3 consecutive years 



in the sea after migration as a smolt 



of Luss Hatchery 



23 



23 

 26 



126 

 }o 



50 



13S 



>« 



142 



142 



143 

 [52 

 160 

 160 

 164 

 :64 

 [68 

 [68 

 ,70 

 [72 



74 



74 



,76 



76 



181 



