94 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Further, I think it very doubtful whether the prevention 

 of landing of plaice less than 20 to 22 cms. long would result 

 in a marked increase in the prevalent size of the plaice caught 

 offshore. To my mind such restrictions may have to be 

 accompanied by transplanting operations carried out on a fairly 

 large scale if they are to be justified. It is only that further 

 information may be obtained as to the nature of such trans- 

 planting that the plaice investigation is being continued, for 

 we, probably, have all the statistical data that are required if 

 the only question at issue is whether size-limits should be 

 recommended, and if so, what limits. The whole question is 

 discussed, in detail, in the report which I have made to the 

 Ministry of Agriculture and Fisheries. 



JAMES JOHNSTONE, 



Department of Oceanography, 

 University, Liverpool 

 March, 1921. 



