Andrea Palladio · The Fourth Book
Chapter XI. Of the temple vulgarly called the Galluce
NEAR the trophies of Mans the following edifice is to be seen, in a round form, which, next to the Pantheon, is the greatest round fabrick in Rome. They vulgarly call this place the Galluce; hence some have said, that in that place was the basilica of Caius and of Lucius, together with 2 beautiful portico Augustus caused to be made in honour of Carus and of Lucius his nephews; which Ido not believe, because this edifice has not any of those parts that are required in basilica’s. How such were made, I have mentioned before in the third book, when, according to Vitruvius, I divided the places of the piazza’s; and therefore I believe that it was a temple.
This edifice is all of brick, and must have been coated with marble; but now it is onely stripped. The cell in the middle, which is perfectly round, is divided into ten faces, and in each face it has a chapel hidden in the thickness of the walls, excepting in the face where the entrance is. The two cells that are on the sides must have been very much adorned because there are many niches to be seen; and it is very likely that there were columns, and other ornaments which accompanying the said niches, must have made a very beautiful effet. ‘Those who directed the emperor's chapel at San Pier, and of the king of France, which have since been ruined, took example from this edifice; which having members on all its parts, instead of abutments, is exceeding strong, and after so longa time is fill standing. Of this temple, because (as have said) there are not any ornaments to be seen, Plate 24. made only one table, in which is the plan and the elevation of the inside.
Public-domain text (London, published by Isaac Ware, 1738). Read from the Internet Archive’s scan (gri_33125011569684) of the copy in the Getty Research Institute, by way of Wikimedia Commons, where it is marked public domain. That scan’s text layer had lost the ends of the lines on every left-hand page, so the pages were read again from the scan’s images, the two readings compared word by word, and the text cleaned: the long s (ſ) is printed s and the ct and st ligatures as plain letters, words broken at the ends of lines are joined, and running heads, page numbers, signatures and catchwords are removed. Ware’s spelling, capitals and punctuation are otherwise kept (shew, publick, antient, compleat). Chapter titles and words the OCR misread were corrected against the page images. Some misreadings will remain, most of them in the italic prefaces and the Latin of Book III. Ware’s dedication, the list of subscribers, his table of terms, the errata and the bookseller’s advertisement are not reproduced. Nor are the 212 engraved plates, their inscriptions, or the keys to the letters on them that Ware prints in the text: where Palladio writes “as in the design” the figure is in the printed book.