AS AN INDEX OF AGE. 



79 



GADUS POLLACHIUS, THE POLLACK. 



Table from Cunningham'' s "Rate of Growth of some Sea Fishes" {Journal of 

 Marine Biological Association, 1891-2). 



Date of 

 collection. 



No. of 

 specimens. 



Length in 

 era. 



April 3, 1890 

 Oct. 2, 1890 

 Dec. 4, 1889 



10 

 4 



2-2-4 

 9-7-ir2 

 9 -3-1 1-8 



Length in 

 inches. 



•8--95 

 3 -8-4 -4 

 3 -7-4 -7 



Calculated age. 



3 to 6 weeks. 

 7 months. 

 9 „ 



The Poor Cod (Gadus minutus). 



Cunningham mentions the occurrence of over two hundred specimens 

 less than three inches long in Whitsand Bay in the middle of June, 

 and that they undoubtedly developed from ova shed the preceding 

 spring. He calculates the age of these at about three months. 



Tabular Eesults of Exaiminatiox of Scales of Pook Cod, Gadus minvMs. 



