In the laundering of corporals a very little starch may be used. Purificators should not be starched. From the time at which corporals and purificators are put in use at the altar, until the time they are sent away to be laundered, the said articles should not be handled by any person who is not in holy order. Before corporals and purificators, which have been in use at the altar, are sent to be laundered they should be carefully rinsed by the priest himself, or some other clerk in holy order, and the water used for such rinsing should be poured into the sacristy drain, which should empty directly into the earth. If there be no sacristy drain, such water should be poured upon the ground near the walls of the church. Corporals in use should be left in the burses, and not be taken out and put away in drawers.
The cloth, with which the priest dries his fingers at the Offertory, should be a small towel not less than half a yard long and a foot wide; for, while the small piece of folded linen often used for this purpose may easily suffice at a low mass, a fair-sized towel is desirable.
Of the Matter of the Eucharist
For valid consecration, bread made of wheaten flour mixed with pure natural water, and wine which is the pure juice of the grape naturally and properly fermented, must be used; and these two materials must be separate, and separately consecrated. If need be, a proportionately small quantity of flour of another kind may be mixed with the wheaten flour without rendering the bread, so made, invalid. The bread may be either unleavened or leavened, but preference should be given to that which is unleavened. In either case the bread must be uncorrupt; and, to avoid the possibility of corruption, the bread used for the Eucharist should be as freshly baked as possible. Unleavened altar breads should not be used after they are three weeks old, even under favorable climatic conditions.
The wine may be either red in colour or white and it may be either sweet or dry, but in every case it must be a genuine wine, "the fruit of the vine," and uncorrupt.
The reserved sacrament should be renewed weekly; and
