These regulations remained in force for Prussia, and were even extended to its newly acquired territories by a brief of Leo XII., dated 2nd December 1828. By this means, the districts on the left bank of the Rhine, which, while under French dominion had only kept the four holidays prescribed by the Code Napoleon, again enjoyed a notable increase in the number of festivals. In order that this might not interfere with the livelihood of the industrial classes, who had to compete with Protestants, it was conceded at the representations of Archbishop von Spiegel that, in the industrial districts, servile labour might be performed after attendance at Mass on the festivals introduced in obedience to the brief of Leo XII. Owing to the deeply religious character of the district in question, very little use was ever made of this concession, and it has accordingly become obsolete. This is the origin of the regulations for Catholic festivals at present in force in Prussia. In one point, however, an alteration has been made, for when the Protestant day of penitence in prayer which falls in November, was fixed by authority in 1893, the Catholics fell in with the arrangement, and now celebrate the Presentation of our Lady in the Temple as a movable feast on the same day. The greatest alterations in respect of the Church’s holy days was caused by the French Revolution. By a decree of the Convention on 5th October 1793, the Christian mode of reckoning was abolished and a new mode substituted for it. The years were to be reckoned from the establishment of the French Republic on 22nd September 1792. The division of time into weeks was also abolished and the months, now uniformly of thirty days, were divided into the decades. The French observed this mode of reckoning until 1st January 1806. While it was in force, Napoleon undertook the re-establishment of ecclesiastical affairs in France, and as far as the regulations for holy days are concerned, traces of the then existing state of things survives until the present day. For the Church had to fall in with the reckoning then in force, to the extent of either abolishing all holy days which fell in the week, or of transferring them to the Sunday. According to the ordinance of the Cardinal Legate Caprara, dated Paris, 9th April 1802, only four holy days were left, _i.e._ Christmas, Ascension, the Assumption (because the 15th August was Napoleon’s name-day), and All Saints. This ordinance affected all France as it was then, that is including the Netherlands, and the whole left bank of the Rhine.