This is presumably the Campo Santa Maria Mater Domini, Nadali & Vianello (1999) Tav. 16 on the canal starting from the Palazzo Pesaro on the Grand canal. For houses at the Campo of Santa Maria Mater Domini see Works, 10.166, and Works, 11.392 and compare references at House Book 2 p.25 and House Book 2 p.26.
There are two references to houses on this campo at Notebook M2 p.3. The first, with reference to the second order windows seems to be of the casa degli Zane; as does the second which is similar in its use of circles to ‘Bacon Priuli’, associated with it there.
There is a daguerrotype of second order windows by Ruskin available here. That is of the Case degli Zane, and what seems to be the same daguerrotype is cited as an example of the second order at Notebook M2 p.69L.
The daguerrotype mentioned at House Book 2 p.25 is said to be of the third order, and on that see Number 6 of Plate XVII at Works, 10.302; Notebook M pp.102L and 102. The drawing at Notebook M p.102L seems to be of the same window as that at House Book 2 p.25L.
The 4th Order windows referred to in the Campo are presumable those of the Palazzo Viaro-Zane, sometimes called the chessboard house by Ruskin and referred to at Works, 11.329 and illustrated on plate facing Works, 11.320. The reference at Notebook M2 p.6L seems to be to the capitals of Casa Viaro-Zane, the chessboard house in the campo of Santa Maria Mater Domini.
There seems, however, some confusion in the references to what Ruskin calls the ‘Chess House’. At Works, 11.281 it is a house with fourth order windows and a chess board pattern in its spandrils, and that is the house illustrated in the plate at Works, 11.320, the Palazzetto Viaro Zane in the Campo Santa Maria Mater Domini. On ‘chessboard’ tesselation see Notebook M2 p.113.
Inexplicably Ruskin, or perhaps Cook and Wedderburn, then refer to Plate 11 at Works, 11.341 as the Chess House. That is clearly the Palazzetto Foscolo Corner, with a squared pattern and shield in the tympanum of the doorway, and located on the Campo Santa Margherita, Dorsoduro 2931, Nadali & Vianello (1999) Tav. 39.
[Version 0.05: May 2008]