[74] Bk. 3, p. 54.
[75] _Op. cit._, vol. 2, p. 240.
[76] _Op. cit._, vol. 2, p. 239.
[77] _Memorie_, etc., vol. 2, p. 36.
[78] _I Cinque Ordini d’Architettura._
[79] _Op. cit._, plate 32.
[80] Bk. 1, chap. 1.
[81] _Op. cit._, vol. 2, p. 30.
[82] The drawings are found in the addendum to the edition of 1617, plates 7 and 8.
[83] Recent investigations, the results of which are set forth by Signor Beltrami (_Il Pantheon_, Luca Beltrami, Milan, 1898), have shown that the existing portico is of later date than either the rotunda or the rectangular front against which it is set.