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Sectionl General Introduction
A Control Experiment with Covered Codends 23
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appears Appendix April May June arithmetic mean Autumn average bottom cent Channel to North charts codend column Common Periwinkle considerable cruises cubic metre December diatom direction distribution Dover Straits current dredging Drift-Indicator effect English Channel estimated favourable fish frequency H. W. Harvey haddock investigations June July Aug length Lightship littorea lunar day Maldon March April mesh miles per lunar month monthly means normal normally distributed North Sea November number of observations obtained October oyster beds oysters past the Varne patch percentage period periwinkles Phaeocystis phytoplankton plaice plankton position present records regarding region Residual Current residual wind Rhizosolenia River Cleddau Roads Haul salinity salinity and temperature samples season Sept spawning Station Straits of Dover strength styliformis Sums of Squares surface Table taken tidal trawl variance variation Varne current Varne Lightvessel water movements wind conditions wind data Winter yearly means Zostera