"Before the year 1765, the choir was enclosed by a fine screen of
mediæval design, but this was pulled down to make some pretended
improvements in the choir, and at the same time a most curious zodiac,
illustrating the seasons, &c., executed by a monk named Martin, at the
order of Bishop Stephen, which was found in mosaic in the pavement of
the choir, was totally destroyed, as well as several other objects of
the highest interest."—Chapuy, pp. 9 and 10.