The author analyzes trends in the sex differential in life expectancy in twentieth-century Europe.  "The magnitude of the sex differential in life expectancy at birth--which is the most convenient measure for summarising changes in the relative mortality of the sexes through the available national life tables...is set forth for each member country together with a geographic classification by regions...."  The results indicate that a continuation of the widening of the difference favoring women will occur.  Gains for both males and females will be quite small during the next century, however.