When not in use both corporal and pall are carried in a square silken pocket called the burse.
The "burse" is a square, stiff pocket of silk over cardboard, in which the Altar-linen is carried to and from the Altar.
The terms were afterwards often used indifferently, and Pisaro, just before, calls the Exchange the burse.
Mass had been said not long since, and the chalice covered with the veil and burse was still on the altar.
The color of the chalice veil and the burse follows that of the season.