On Architecture

1. THERE are also circular temples, some of which are constructed in monopteral form, surrounded by columns but without

a cella, while others are termed peripteral. Those that are without a cella have a raised platform and a flight of steps leading to it, one third of the diameter of the temple. The columns upon the stylobates are constructed of a height equivalent to the diameter taken between the outer edges of the stylobate walls, and of a thickness equivalent to one tenth of their height including the capitals and bases. The architrave has the height of one half of the thickness of a column. The frieze and the other parts placed above it are such as I have described in the third [*](Codd. quarto) book, on the subject of symmetrical proportions.