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Art. I. It resolves 4 doubts occurring regarding the common time of celebrating, namely the day.
Doubt I. Whether it is permitted to celebrate indiscriminately by night and by day.
II. Whether there is any night in which one may licitly celebrate.
III. Whether it is permitted to celebrate before the beginning of the day.
IIII. Regarding the celebrant who believes the day has begun, yet it has not yet begun.
Art. II. It resolves 3 doubts that offer themselves regarding the proper time of celebrating, namely the hour.
Doubt I. At what hour of the day it is permitted to celebrate.
II. From what time the beginning of the day is to be taken.
III. Regarding one who does not observe the due time of celebrating.
Art. I. It resolves 5 doubts that arise regarding priestly vestments and garments.
I. Whether one about to celebrate ought to be clothed in special vestments and garments.
Doubt II. What and how many are such garments.
III. Regarding the blessing of such items.
IIII. Regarding a celebrant without blessed vestments and garments.
V. Regarding the cleanliness of such vestments and garments and other things required.
Art. II. It resolves 4 doubts that occur regarding vessels opportune for celebrating.
I. Whether special vessels are required for celebrating.
Doubt II. What and how many are such vessels.
III. Regarding the material of such vessels.
IIII. Regarding the consecration of such things.
Art. III. It resolves 8 doubts occurring regarding circumstances and other exterior matters.
I. Regarding the necessity of the missal book.
II. Regarding the requirement of fire or the light of a candle.
III. Regarding the appropriateness of a minister for the celebrant himself.
Doubt IIII. Regarding the condition and quality of the minister.
V. What if the minister departs from the altar, leaving the celebrant alone, and subsequently returns.
VI. What if he does not subsequently return.