The Da Vinci Notebooks at sacred-texts.com
Mottos and Emblems (681--702). Stubborn rigour.
356:319 : See Pl. LXII, No. 2, the two upper pen and ink drawings. The originals, in the Windsor collection are slightly washed with colour. The background is blue sky; the plough and the instrument with the compass are reddish brown, the sun is tinted yellow