312 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



TMarlAprMay 



Aug\Sep. I 



Text-Fig. 3. Mean quantities of Plaice (in cwts.) caught per day's 

 fishing in the North Welsh Winter Plaice fishing area during the years 

 1909-1912. Figures on the vertical axis represent cwts. The dotted 

 line superposed on the curve for 1909 represents the mean catch for 

 the whole period. 



