  In an earlier preprint (math.AG/9810142) we gave an explicit description of
the algebraic closure of the field of power series over a field of
characteristic p, in terms of "generalized power series". In this paper, we
give an analogous description of the algebraic closure of the fraction field of
the Witt ring of a field of characteristic p, using an analogue of generalized
power series in mixed characteristic due to Poonen.
