Howard, op. cit., vol. ii, p. 114.
This rule is, in England, by no means a dead letter. Thus, in 1907, a wife who had left her home, leaving a letter stating that her husband was not the father of her child, subsequently brought an action for divorce, which, as the husband made no defence, she obtained. But, the King's Proctor having learnt the facts, the decree was rescinded. Then the husband brought an action for divorce, but could not obtain it, having already admitted his own adultery by leaving the previous case undefended. He took the matter up to the Court of Appeal, but his petition was dismissed, the Court being of opinion that "to grant relief in such a case was not in the interest of public morality." The safest way in England to render what is legally termed marriage absolutely indissoluble is for both parties to commit adultery.
Magnus Hirschfeld, Zeitschrift für Sexualwissenschaft, Oct., 1908.