Stepped Trench: Men Needed to Cast Earth Up by Depth
The lowest 2 canne need 13 men; the topmost canna, one man
Two perspective diagrams show workmen, marked by pins or dots, ranged along a stepped, terraced trench and relaying the spoil up onto the bank. A note states that the 2 canne at the bottom of the ditch require 13 men to throw the earth up over the embankment, while the first, topmost canna needs only one man. A faint landscape of hills is sketched across the top of the sheet, with a small calculation column at the right (750 x 4 = 3000; 1500 giving 214 2/7).
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Men required to cast earth up by depth
The 2 canne of the bottom require 13 men to throw the earth up over the bank of the ditch, whereas the topmost canna, one canna high, needs but a single man. The measure 6 braccia is noted alongside.
Stepped-trench diagrams with ranked diggers
Two perspective drawings of a stepped, terraced ditch show little figures set at the successive levels, casting spoil upward step by step to the men above and finally over the bank.
Faint sketch of a range of hills
Across the top of the sheet a light red-chalk outline sketches a low range of hills or ridges, unrelated to the excavation figures below.
Small calculation column
At the right a short reckoning works 750 by 4 to 3000, with 13 and a division of 1500 giving 214 and 2/7.