p.11
Interestingly enough, the text written on the front and back of the page seems to take advantage of the transparency of the sheet. The text has its appropriate space by the use of relative images or blank spaces.
The layout is as if cut in two vertically.
p.13
In the illustrations, it is often used the personification of relative structures, as for example the Tuscan column depicted by a man with a humble appearance.
From here on the illustrations are been given the backspace empty, perhaps to make notes or to avoid the convergence of the illustration due to the transparency of the pages.
This may be a representation of a portal of the Tuscan order very much rural and rudimental as the humble peasant.
The back space reveals the imprint of the illustration.