(pulvinar, cussinus, culcitrum), a cushion, usually of velvet, and stuffed with wool or horsehair, for the service-book on the south side of the altar, appears in Henry's VI's Book of the Hours, and was used by bishop Alndrewes. In the former it is on the south side, in the latter on the north. Albertis mentions the wooden desk, plated (legile), as a modern substitute. The book was first set on the right side and afterwards moved to the left side of the altar at mass.