Recently the C.M.I. Committee has given serious consideration to the construction of a table reflecting the mortality of female assured lives. The crude data underlying the proposed table relate to the quadrennium 1975-78. At this stage the work is not entirely complete, since there has not yet been time to extrapolate to childhood the mortality rates resulting from the graduations, which necessarily relate to adult ages. However the Committee is of the view that the present state of the work is sufficiently advanced to be of some general interest. This paper reports on progress to date and the Committee wishes to obtain the reaction of the profession to the work so far carried out. The final results of the investigation will appear in due course in a C.M.I. Report.