VIII. Botany for Painters and Elements of Landscape Painting: 465.
465.
OF LIGHT AND SHADOW IN A TOWN.
On the treatment of light for views of towns (465-469).When the sun is in the East and the eye is above the centre of a town, the eye will
see the Southern part of the town with its roofs half in shade and half in light, and the same towards the North; the Eastern side will be all in shadow and the Western will be all in light.