Manchester Mevioirs, Vol. lvii.{\f)\l), Xo.'^. 25 



Results for 191 i. 



Comparing the averages of the Ratios of 



lengths and weights of the different 



classes of fish 



Graph 7. 



1+ 2 2-f 3 3- 4 



Nmnljcr of \'eai> -pent m sea. 



.5 -19 

 I -18 



.Si '16 



Correlation of the Coefiicients of 

 Variation of lengths and 

 weights. 



Gkai'H S. 



Number of years s[)cnt in sea. 



Comparing the averages of the Ratios of 



lengths and girths of the different 



classes of fish. 



Gkai'H q. 



Correlation of the Coefficients of 

 Variation of lengths and 

 girths. 



Gkai'H 10. 



2-05 



1-9; 



Number of years spen' in sea. 



22+3 3+ 



Xumber of years spent in sea. 



