20 



Part III. — Seventeenth Annual Report 



Cold Months : November — April. 





No. of 

 Hauls. 



Plaice. 



Lemon 

 Soles. 



Common 

 Dabs. 



Long Rough 

 Dabs. 



No. 



Aver. 



No. 



Aver. 



No. 



Aver. 



No. 



Aver. 



1st Period — 

 1886-90, 



2nd Period — 

 1891-95, 



128 



238 



5580 

 7591 



43-6 

 31-9 



766 

 1144 



6-0 

 4-8 



1530 

 4611 



11-9 

 19-3 



1278 

 3455 



9-9 

 14-5 



Warm Months : May — October. 



1st Period— ! 



1886-90, | 197 

 2nd Period— i 



1891-95, ! 228 



j 



19,844 

 15,362 



100-7 

 67-3 



3679 

 3947 



18-7 

 17-3 



14,237 

 16,878 



722 

 74-0 



2780 

 4539 



14-1 

 199 



The change in the relative abundance of the offshore-spawning plaice 

 and lemon soles, and of the inshore-spawning dabs was common to 

 almost every month of the year, as the following analysis shows : — 





Plaice 



and Lemon 



Soles.* 



Dabs. 



Month. 



1st Period— 1886-90. 



2nd Period— 1891-95. 



1st Period— 18 



36-90. 



2nd Period— 1891-95. 



I r 



No. of Hauls. 



Average. 



Per Cent. 



j No. of Hauls. 



t 



Per Cent. 



J No. of Hauls. 



| Average. 



5 

 O 



$ 



No. of Hauls. 



Average, j 



Per Cent. 



Jan., 



10 



14-6 



60-3 



31 



30-7 



56-6 



10 



9-6 



39-7 



31 



23-5 



43-4 



Feb., 



14 



46-8 



84-2 



50 



32-2 



61-2 



14 



8-8 



15-8 



50 



20-4 



38-8 



- Mar., 



26 



63-1 



79-7 



38 



45-7 



58-3 



26 



16-1 



20-3 



38 



32-6 



41-7 



April, 



25 



70-8 



69-9 



40 



53-4 



56-8 



25 



30-6 



30-2 



40 



40-7 



43-2 



May, 



23 



68-8 



56-8 



39 



62-1 



53-9 



23 



52-4 



43-2 



39 



53-0 



46-1 



June, 



40 



110-9 



59-3 



40 



95'0 



49-6 



40 



76-0 



40-7 



40 



96-2 



50-4 



Jnly, 



21 



93-5 



55-8 



38 



105-3 



57-2 



21 



74-1 



44-2 



38 



78-6 



42-8 



Aug., 



44 



193-9 



57-6 



34 



82 6 



41-3 



44 



142-0 



42-4 



34 



1174 



58-7 



Sept. , 



30 



109-8 



53-5 



37 



91-4 



39-0 



30 



95-6 



46-5 



37 



142-4 



oi-o 



Oct., 



39 



95-2 



64-2 



40 



72-2 



47-2 



39 



53-0 



35-8 



40 



81-0 



52-8 



Nov., 



31 



62-5 



66-2 



37 



35-2 



37-8 



31 



31-9 



33-8 



37 



57-8 



62-2 



Dec, 



22 



8-9 



32-0 



42 



23-6 



43-2 



22 



18-9 



68-0 



42 



3i i 



58-8 



It may be also noticed from this Table that in one month in the two 

 periods, namely June, the same number of hauls (40) were made, and that in 

 October of the two periods the number of hauls was nearly equal, 39 in 



