without reference to the preceding feast, or if second vespers of the
preceding feast is to be said entire, without reference to the
following; or, again, first vespers of the following with commemoration
of the preceding, or second vespers of the preceding with commemoration
of the following, or vespers of the more noble feast with commemoration
of the other--any of these may be the liturgical order to follow, and
the _Tabella_ makes things clear.

The "tables" are to be used thus:--Opening the Breviary at the _I
Tabella, "Si occurrat eodem die,"_ first find the number marked in that
square in which the two feasts in question meet, and then read the
direction printed, in column on same page to left-hand side, bearing
the same number. For example: the question is about the occurrence of a
Sunday of the first class and a Double of the first class. _Double of
the first class_ stands first word of page, and _Sunday of first class_
will be found in column beneath the rows of figures. Now the square in
which straight lines drawn from _double of first class_ and _Sunday of
first class_ meet bears the number 6, and reference to number 6 in
column of directions found on same page gives the rule, "_Officium de 2,
Translatio de I_," that is, the office must be of the Sunday of first
class and the double of the first class must be transferred according to
the rubrics. When in these brief directive notes, (1-8), mention is made
of the "first or the preceding," the reference is made to feast or
office printed in the upper part of the Table, e.g., Double of first
class. Reference to "the second" or "following" refers to feast printed
in the lower section of the Table. Where _O_ stands in a square in the
_Tabella_ it signifies that there can be no occurrence or concurrence
between feasts whose "lines" meet in that square. These two tables are
very ingeniously arranged. The lists, given in the Breviary following
these tables, give the lists of greater Sundays and Ferias, privileged