252 



R. J. H. BEVERTON 



300 



"e 



200 



lOO 



Fig. 6, — Relation between total egg-production of plaice and {A) egg distribution, (B) egg density 

 and (C) overspill into the English Channel. 



are found at peak spawning to increase with total number of eggs. The 

 corollary of this is that there should be a closely proportional relationship 

 between average egg density and egg numbers, which is seen to be the case 

 in Fig. 6b. Even the proportion of eggs deposited beyond the Straits of Dover 

 seems to be independent of the total egg deposition (Fig. 6c), although this 

 'overspill' has been surveyed only on a few occasions. Therefore it seems 



