EN
This paper deals with the prohibition in Bohemia of the communion under both species of laity by the Catholic Church in years 1621–1622. This decision has been seen as an evidence for many researchers. But one can be surprised, that the post-tridentine Papacy was not in favour of this prohibition, even in the beginning of the year 1621. This decision was a complex negotiation between bohemian clergy, nobility, Habsburg monarch and the Pope, who culminated with the Roman decision of the 11–27 of November 1621, and with the Viennese theological Consulta of the 12 of January 1622. Such a decision was crucial: the old catholic strategy of reunion of Utraquists left the place to a new missionary politic. Documents from the archive of the Supreme Congregation of Roman Inquisition give a new light on the decision of prohibiting the chalice for laity in Bohemia, and especially of his doctrinal basis. A selected edition (in the form of a transcription) follows in a second part of this paper.