_ 600- 

 — bW- 

 -480- 

 -420- 

 -360- 

 -300- 

 -Z40- 



'^ -180- 



120- 



-60- 



12 3 * 5 6 7 8 9 10 II a 



Fig. 7. Plaice: south. North Sea, 1902 



I 2 3 '1 S 6 7 8 9 10 11 12 



Fig. 9. Plaice: Skager Rak, 1902 



6 



6 



-360- 

 -300- 

 -240 — 

 -180 — 

 -120 - 

 -BO — 



I 



I^T-T'-TT-T^ 



I 



I 2 3 i» 5 6 7 8 9 10 11 12 



Fig. 8. Plaice: south. North Sea, 1903 



I 2 3 * 5 6 7 B 9 10 11 12 



Fig. 10. Plaice: Skager Rak, 1903 

 means large plaice (sorts I und IIj 



N.B. In Figures 7 — 10 < — small — (sorts III) 



I I — total amount 



