pleading to excuse delay

The party who makes such appeal should set forth in his bill specifically what were the impediments to an earlier prosecution of his claim; how he came to be so long ignorant of his rights, and the means used by the respondent to fraudulently keep him in ignorance; and how and when he first came to a knowledge of the matters alleged in his bill; otherwise the chancellor may justly refuse to consider his case, on his own showing, without inquiring whether there is a demurrer or formal plea of the statute of limitations contained in the answer