Ioannis Kepleris ... Strena, seu, De niue sexangula
Kepler's 1611 treatise Strena, seu, De niue sexangula, printed at Frankfurt by Godefridus Tampach, is a scholarly geometry work on the six-cornered shape of snowflakes, written for learned readers. Its single picture is a dense black-and-cream woodcut-style title ornament, an oval vignette of a figure among clouds and waves inside a strapwork border with putti and scrollwork, which a designer might borrow for its dramatic contrast and ornamental framing.
