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Fig. 209. Phaeocystis and herrings. A, distribution of Phaeocystis 17-24 April, 

 1924, normal distribution. +, Phaeocystis scarce or absent. O, stations in 

 Phaeocystis zone. Intensity of concentration shown by shading. -^ ^^^^"^^"l 

 herring migrations. B, distribution of Phaeocystis, 8-13 April, 1926. bpring 

 fishery interference. C, distribution of PhaeocysUs, 6-9 November, 1927. 

 Autumn fishery interference. ^.K". = Smith's Knoll Lightship. (After Savage.) 



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