LIST OF ILLUSTRATIONS 



Young salmon artificially reared at the Duke 

 of Richmond and Gordon's ponds near the 



mouth of the Spey Frontispiece 



PLATE I. Dorsal fin of grilse, caught in 1906, 



with silver mark inserted when the fish 



was a smolt in 1905 TO face page 30 



PLATE II. Measuring length of salmon on 



marking board and piercing dorsal fin for 



insertion of mark . . . , 58 



PLATE III. Weighing fish suspended by worsted 



tail band after insertion of mark . . 58 

 PLATE IV. A male salmon in full spawning 



livery, fresh from the sea in November. 



The fish has just been marked on the 



dorsal fin ......,, 92 



PLATE V. Scales of grilse and small spring 



salmon recaptured in 1906 and 1907 



respectively, each fish having been marked 



as a smolt in 1905 * . . . 100 



PLATE VI. Two scalesi from a salmon at 



different stages of growth, when the fish 



was marked as a kelt and recaptured as a 



clean fish . . . . 102 



PLATE VII. A salmonmarking crew on the 



Helmsdale, Sutherland . . . . 122 



