46 



THE SEA FISHERIES 



skates predominate. Bream is the only other fish taken in any 

 quantity. 



Below 30 N. latitude off the west coast of Africa there are trawling 

 grounds within the sphere of action of British steam trawlers. 

 These grounds are situated off the coast of French West African 

 possessions (Senegal), and a certain amount of exploratory trawling 

 has already been done between Cape Blanco and Cape Vert under 

 the auspices of the French Colonial Government.^ A detailed 

 consideration of these grounds is beyond the scope of the present 

 volume. It should be noted, however, that the bottom is favourable 

 for trawling to the north-west, west and south-west of Cape Blanco ; 

 on the seaward edge of the Bank of Arguin ; south of Nouakchott 

 and near Guet N'Dar. 



On some of these grounds the common sole is abundant, while 

 on others it is replaced by more southern forms belonging to the 

 genera Sjoiaptura and Cynoglossus. Species of Dentex, Serranus 

 and Scisena are abundant ; these fish would probably be termed 

 by British trawlers " Rock Cod." Fish allied to the ray and skate 

 of British waters are not uncommon. Lobsters and prawns are also 

 numerous on these grounds. 



Quantity of Demersal Fish Landed for each Region 

 (Expressed as percentages) 



White Sea 



Iceland . 



Faroe . 



Rockall 



North of Scotland 



North Sea 



English Channel 



Irish Sea 



Bristol Channel 



Westward of Scotland 



West of Ireland 



Southward of Ireland 



Biscay . 



Portugal & Morocco 



1906. 



0-57 

 20-90 



7-79 

 1-38 



0'12 



54-75 

 278 



0-95 



I'02 



3-OI 

 0-09 



5-55 

 0-78 

 0-31 



1907. 



I -02 



18-77 

 7-50 



1-38 



0-17 



49-58 



2-23 



i'33 

 I-I3 



4-56 

 0-05 

 11-66 

 0-48 

 0-14 



1908. 



1-64 

 20-04 

 4-64 

 0-62 

 0-41 

 47-20 



2-12 



1-34 



1-25 



7-59 



0-25 



12-09 



0-51 

 0-30 



1909. 



3-84 

 15-51 



6-93 

 0-68 

 0-66 



45-14 

 2-10 

 1-49 

 1-23 

 8-90 

 0-06 



12-79 

 0*12 



0-55 



1910. 



3-80 

 17-27 

 6-76 

 0-49 

 1-09 



43-63 

 2-02 

 1-98 

 1-28 



9-31 



o-i6 



10-97 



0-33 

 0-91 



1911. 



4-27 



18-74 



6-86 



0-35 



1-04 



42-42 



2-II 

 2-58 

 I-6I 

 8-41 

 0-87 



9-87 

 0-22 

 0-65 



I912. 



2-46 

 18-73 

 7-32 

 0-28 

 0-80 

 43-74 



2-54 

 2-62 

 1-61 

 8-26 

 1-89 

 g-oi 

 0-37 

 0-37 



1913- 



1-48 

 22-89 

 8-07 

 0-69 

 0-94 

 41-49 

 2-37 

 2-77 

 1-39 

 7-59 

 1-82 

 7-64 

 0-18 

 0-68 



Drift netting for herrings is carried on off the coasts of Scotland 

 and Ireland and the east coast of England. In Scotland three 

 seasons are distinguished : — 



I. The winter herring fishery, which includes the first three 



» Reference should be made to L' Industrie des Piches aux Colonies, par G. Darboux, 

 Marseille, 1906, Vol. II, p. 170 ; and Les Pickeries de VAfrique occideniale Franpaise, 

 par A. Gruvel, Paris, 1906. 



