AS AN INDEX OF AGE. 



77 



The following two tables are summaries of the more detailed tables 

 and of other results, giving the ages of a number of fish in a more 

 convenient and concise form. The first of these tables may serve to 

 bring out exceptions or variation, namely, that in some cases pollack 

 of approximately the same size may be of a very different age. 



The second of these tables is a more general one, and serves rather 

 to bring out the more general facts as to the size of pollack in relation 



to age. 



POLLACK. 



