3) Vestments for the priest, and (4) An acolyte or server.

Q. 937. What is the altar stone, and of what does it remind us?
A. The altar stone is that part of the altar upon which the priest rests
the Chalice during Mass. This stone contains some holy relics sealed up
in it by the bishop, and if the altar is of wood this stone is inserted
just in front of the Tabernacle. The altar stone reminds us of the early
history of the Church, when the martyrs' tombs were used for altars by
the persecuted Christians.

Q. 938. What lesson do we learn from the practice of using martyrs'
tombs for altars?
A. From the practice of using martyrs' tombs for altars we learn the
inconvenience, sufferings and dangers the early Christians willingly
underwent for the sake of hearing Mass. Since the Mass is the same now
as it was then, we should suffer every inconvenience rather than be
absent from Mass on Sundays or holy days.

Q. 939. What things are used with the chalice during Mass?
A. The things used with the chalice during Mass are: (1) The purificator
or cloth for wiping the inside; (2) The paten or small silver plate used
in handling the host; (3) The pall or white card used for covering the
chalice at Mass; (4) The corporal or linen cloth on which the chalice
and host rest.

Q. 940. What is the host?
A. The host is the name given to the thin wafer of bread used at Mass.
This name is generally applied before and after Consecration to the
large particle of bread used by the priest, though the small particles
given to the people are also called by the same name.

Q. 941. Are large and small hosts consecrated at every Mass?
A. A large host is consecrated at every Mass, but small hosts are
consecrated only at some Masses at which they are to be given to the
people or placed in the Tabernacle for the Holy Communion of the
faithful.

Q. 942. What vestments does the priest use at Mass and what do they
signify?
A. The vestments used by the priest at Mass are: (1) The Amice, a white
cloth around the shoulders to signify resistance to temptation; (2) The
Alb, a long white garment to signify innocence; (3) The Cincture, a cord
about the waist, to signify chastity; (4) The Maniple or hanging
vestment on the left arm, to signify penance; (5) The Stole or long
vestment about the neck, to signify immortality; (6) The Chasuble or
long vestment over all, to signify love and remind the priest, by its
cross on front and back, of the Passion of O