The place of the choir (since it ought to be by the high altar, whether
it surround it from before, as the ancient custom was, or it be behind,
because either the site of the church, or the position of the altar, or
the custom of the place so require) being separated from the space
occupied by the people (as the ancient structures and the nature of the
discipline show) and surrounded by screens, ought to extend so far, both
in length and breadth, where the space of the site allows of it (even to
the form of a semicircle, or some other shape, according to the
character of the church or chapel, in the judgment of the architect), as
to correspond fitly in capaciousness, as well as in becoming adornment,
to the dignity of the church, and the number of the clergy.