discovery reports 1940 discovery reports discoveryreports19inst year 1940 24 discovery reports the mean value between o ioo m has been selected because this layer with very few exceptions consists of true antarctic surface water unmixed with the upper layers of the warm deep water the mean values so obtained were averaged over two monthly periods and plotted against the various months of the year having regard to the considerable differences in the actual phosphate content across such a large area as the antarctic zone which stretches from the ice edge to the antarctic convergence tog t1h5g4.jpg from discovery tamil உடல்உரவு கொலலுத View Photo