PICA, or Pye, had formerly the same sense as ordinal, meaning a table or directory, pointing out the order in which the devotional services appointed for different occasions were to be performed. Accordingly we are told it is derived from πi, a contraction of πιαζ, a table; and by others from littera picata, a great black letter at the beginning of some new order in the prayer. The term was used in a similar sense by officers of civil courts, who called their calendars or alphabetical catalogues directing to the names and things contained in the rolls and records of their courts the pyes.