84 



NOTES ON A FISHING VOYAGE TO THE 



In Table III are shown the ages of certain individual fishes, reckon- 

 ing that, as in the North Sea, one white ring is deposited annually, 

 and that each fish had recently completed the number of years 

 specified. In the case of the larger (older) fishes, the outer rings are 

 so crowded together that accurate counting would seem impossible. 



I have, however, included a few examples of these, estimating the 

 age at not less than a certain number of years, as shown by the number 

 of distinct white rings. 



If fishes of either sex are not less than ten years old when 40 cm. 

 in length, to what age must a male of 57 cm. or a female 73 cm. in 



Table III. — Showing the age of certain individiial ^ytaice from the Barents 

 Sea, August, 1907, estimated according to the number of white rings shown 

 on the otoliths : — 



FEMALES. 



Number of White Rings. 



31 



32 



33 

 34 

 35 

 37 

 39 



40 



41 



42 

 43 



44 

 45 



46 

 50 



54 



Immature. 

 6 



6 



5 



6 

 10 , 



6 



6 



6 



9 



9 

 10 



7 



3 



8 



9 



9 



9 



9 



10 



not L 9 



not L 12 



not L\2 



