Table 1. — Percentage frequency distribution^ and mean number of circuli in tlie first 

 ocean zone of scales from sockeye salmon collected in 1963 



[Asterisks indicate modes] 



1 Actual frequencies smoothed according to Henry (1961). 

 - Combined 1. and 2. fresh-water ages. 

 3 1. fresh-water ages only. 



PHOTOGRAPHIC ATLAS OF SOCKEYE SALMON SCALES 



257 



