310 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Beaumaris and Conway Bays, and off Great Orme's Head, 

 in Carnarvonshire; and the grounds in "Channel 

 Course," that is, the tract of sea between Point Lynus 

 and the Liverpool North-West Light Vessel. The area 

 is rather large, and perhaps better results might have 

 been obtained by considering only the fishery in Eed 

 Wharf Bay, but it is often the case that a vessel is 

 returned as having fished both in Red Wharf Bay and 

 in Channel Course, or in Red Wharf Bay and off Great 

 Orme's Head, or in Red Wharf Bay and in Conway Bay. 

 There seems to be no alternative to combining these 

 various grounds in one, rather heterogeneous, area. 



The immediate results of this study of the statistics 

 are given in Table XIII. The entries are means for each 

 week of the period, a week meaning the days from 

 Sunday to Saturday (both included). The first column 

 under each year gives the total number of days' fishing 

 recorded in the forms filled up for the week ; the second 

 column the total quantity of plaice, in cwts., caught 

 during the week ; and the third the mean catch, in cwts., 

 per day's trawling. 



Only first-class sailing vessels (smacks) furnish 

 these returns, and the results represent the effect of the 

 fishery of a fleet of vessels varying in number from about 

 a dozen to thirty. Steam trawlers also fish on this 

 ground, outside the territorial limits, and a certain 

 (small) number of third-class fishing boats may also 

 trawl at times. Neither the steam trawlers nor the third- 

 class vessels furnish returns to the Collector of Statistics 

 at Bangor, and the conclusions which may Be drawn 

 from the summary are valid only if it is assumed that 

 the results of the fishing operations of the small fleet 

 of smacks represent the relative abundance of plaice 

 on the grounds. It is probable that this conclusion is 

 a correct one. 



