71. This sum total is composed of 1780 'domus', or great
houses, of 46,602 'insulae', or plebeian habitations (see
Nardini, Roma Antica,1. iii. p.88); and these numbers are
ascertained by the agreement of the texts of the differerent
'Notitiae'. Nardini, l. viii,
p. 498, 500.