Notebook M p.202L has a diagram (with ‘side note’) of the upper shafts above the capital on Shaft B (the corner shaft). Sheet No. 129 has a plan of the disposition of the bases and pavement of the south-west portico with the corner plinth noted as ‘shaft B’ i.e the column at the south west corner. See also Notebook M p.202. ‘Next, on capital of great shaft next Campanile; B p 180’.
[Version 0.05: May 2008]