Abstract
This review of work on the circumpolar current and Convergence will indicate that a number of hypotheses have been advanced, each claiming to have some support from the observations and each differing considerably in their premises. Thus on one side departures from purely zonal flow along lines of latitude are all important, on the other such departures are irrelevant. It will be seen that none of the hypotheses suggest the formation of the marked Convergence zone that has been described by Deacon and in that respect they fail, for the dynamics of the flow should contain a description of the Convergence. It is worth while to describe these hypotheses briefly and see in what respects they are successful and where they fail.

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