The next time the issue was raised was in 1880, when the Sacred Penitentiary on June 16 of that year issued a more general response (i.e., not directed just to an individual bishop). This time the Vatican goes further: not only does it instruct confessors not to "disquiet" or "disturb" married couples who are already practising periodic continence; it even authorizes the confessor to take the initiative in positively suggesting that method, with due caution, to couples who may not yet be aware of it, and who, in his prudent judgment, are otherwise likely to keep on practising the "detestable crime" of onanism. One could not ask for a more obvious and explicit proof that already, more than eighty years before Vatican II, the Holy See saw a great moral difference between NFP (as we now call it) and contraceptive methods (which Catholic moralists then referred to globally as 'onanism' of different types). The precise question posed was this: "Whether it is licit to make use of marriage only on those days when it is more difficult for conception to occur?" The response is: "Spouses using the aforesaid method are not to be disturbed; and a confessor may, with due caution, suggest this proposal to spouses, if his other attempts to lead them away from the detestable crime of onanism have proved fruitless." The editorial notes in Denzinger indicate that this decision was made public the following year (1881) in the respected French journal Nouvelle Revue Théologique, and in Rome itself in 1883 in the Vatican-approved series Analecta Iuris Pontificii.