The online edition of this book in the public domain, i.e., not protected by copyright, has been produced by the Emory University Digital Library Publications Program.

Pictorial title page, text and ill. are engravings. Plates 15, 18/19, 21/22, 23/24 and 33 are double; numbers 14 and 33 omitted. The church is Sant'Ivo all Sapienza, Rome.