The Ducal Palace niches are considered at Works, 10.280-281. The Ducal Palace is said there to be the only secular building in Venice to have niches, though Ruskin suggests the possibility that others might have been removed in ‘restorations’. He refers to the woodcut at Works, 10.331 to illustrate their arrangement at the corners of the Ducal Palace.
A discussion of these niches begins at the bottom of Notebook M p.209, and reference is made there to the observations and drawings recorded at Bit Book pp.47-49L.
The discussion of the niches of the Ducal Palace appears in M in the middle of a longer account of St. Mark’s niches.
[Version 0.05: May 2008]