110 



Racial Studies in Fishes 



and of the six coiJibiiiati<ms wittn] above as t'ouiul, not all were of the 

 same fre(|uency. 



An attempt has been made to characterise the various larger regions 

 of sea within the Zoarces area by means of the average qualities of the 



a = 113-iO(±0-U). 



Fit?. 4. Zuarces viriiitnux, L. Number of vertebrae. Population analyses for three 

 successive , years tV(im Station 31, Iso Fjunl, Sealant!, Denmark. 



