De coloribus oculorum
A Latin treatise on eye colour by Simone Porzio, printed in Florence in 1550 by Laurentius Torrentinus for a learned readership. The two pictures are woodcut initial letters, a large D and E, each filled with a scene of horsemen, a rider with a lance, a hound and a fluttering flag set in open landscape, giving a designer decorative capital-letter models with dense hatched shading.
