Ground-floor house plan with garden stair, and structural sketches
How the passages, cellar stair and low garden door are arranged
The upper part of this blue-grey leaf carries vertical shafts and a triangulated, W-shaped framed member keyed with letters, with a faint black-chalk sketch of a reclining figure beneath. Turned upside down, the lower part is a ground-floor building plan whose mirror-written note explains the passages leading to the garden and how to tuck the cellar stair beneath the main stair n m, keeping the garden door low. A small circle divided by a line sits at upper left, and the codex's scholarly index also associates optical observations with this sheet, so further untranscribed writing is present.
On this page
Passages to the garden and the cellar stair
On the ground floor the passage a b leads to the garden, or else the passage c d serves. To enter the garden by a b, the cellar stair is set under the head of the stair n m (under m) and descends so as to form the cover of that stair, while the garden door is to be kept low.
Lettered structural drawing across the top
At the top right a drawing is keyed with the letters a b c [d]. Vertical shafts and a triangulated framed member run across the head of the sheet, read as framing or a hoisting structure.
Circular diagram and optical notes
A small circle divided by a line is drawn at the upper left. The codex's scholarly index tags this leaf with optical observations, indicating further untranscribed notes on vision are present on the sheet.