Tratado de la qualidad manifiesta, y virtud del azogue : llamado comunmente el mercurio, y por otro nombre el argentum vivum ...
A 1649 Spanish treatise on mercury, printed in Mexico City by Juan Ruiz and written by Hernando Bezerra, a medical text on the metal's qualities and uses. Its pictures are four decorative woodcut initial letters, a square S, a diagonal N, a D, and an O, each framed in dense foliage and scrollwork that a designer could adapt for monogram or border work.
