[Footnote 84: Procopius has given the best description of
the temple of Janus a national deity of Latium, (Heyne,
Excurs. v. ad l. vii. Aeneid.) It was once a gate in the
primitive city of Romulus and Numa, (Nardini, p. 13, 256,
329.) Virgil has described the ancient rite like a poet and
an antiquarian.]