De formatrice foetus liber : in quo ostenditur animam rationalem infundi tertia die
A 1620 Latin treatise on embryology by the Flemish physician Thomas Feyens, printed at Antwerp by Guilielmus à Tongris under the sign of the griffin, written for scholars and physicians. Its pictures are small woodcut devices: a densely hatched decorative initial P with scrolling foliage, and a printer's griffin mark framed by a banner and cherub-like supporters, a compact vocabulary of Renaissance ornament a designer could borrow for monograms and emblem-style logos.
