TO write the full life of Mary Tudor, second daughter of Henry VII., is to attempt the impossible, for the term usually implies a consecutive story from the gate of birth to that of death. We do know now the dates written over both these gates, but while her early days are shrouded by lack of information, her later years are equally indistinct. For less than a couple of years Mary Tudor lives and moves before us, and only this watch and vision is clear. From October 1514 to May 1516 she reveals herself, and fortunately with greater distinctness than she could possibly have done in a chronicle of orderly days with their circling duties and small joys and sorrows. To most ordinary men and women there comes one great moment in life, the third act of the play, to which all the previous scenes have been leading, and it is during Mary's great moment, when her nature was keyed to its highest pitch, that we are able to see her clearest. Before it arrives and after it has passed one desires, and desires in vain, the chronicle of those smaller joys and sorrows, but it is not to be found, and as we cannot have the life let us make the most of the episode...