HISTORY OF THE PACIFIC SALMON. 



579 



scales agreed with the known times. Text-fig. 99 is a scale from 

 one of these fish which was captured in the Tay nets on May 7th, 

 1907. It had been marked as a sinolt when the scale had grown 

 to the point C, and when the fish was just over two years old. 

 The winter band formed in the winter 1905-6 is apparent 

 between the points marked D, and the band formed in the winter 



Text-fi£r. 99. 



Scale of 12^- lb. salmon {Salmo salar) caught in the Tay nets on Maj^ 7th, 1907. 

 Previously marked as a smolt in May 1905. (For references see the text, supra.) 



1906-7 between the points E. Outside the last band is seen 

 the quick growth made in the summer of 1907 previous to 

 May 7th, when the fish was netted. Summer growth is the term 

 used in distinction to winter growth. It does not mean growth 

 taking place only in June, July, and August, our summer months. 

 It evidently starts and finishes at varying times, the probable 

 Proc. Zool. Soc— 1913, No. XXXIX. 39 



