Theoricae novae planetarum Georgii Purbachii : ; quibus accesserunt: Ioannis de Monteregio disputationes, super deliramenta theoricarum Gerardi Cremonensis .... item Ioannis Essler Maguntini tractatus utilis ante LX annos conscriptus, cui titulum fecit, speculum astrologorum .... quaestiones vero in theoricas planetarum Purbachii authore Christiano Urstisius
A 1596 Latin astronomy treatise compiled by Christian Wurstisen from works by Purbach, Regiomontanus and Essler, printed by Sebastian Henricpetri in Basel for scholars studying planetary theory. Its pictures are small black-and-white geometric diagrams of planetary orbits, epicycles and eccentric circles, set in dense type with lettered points; a designer might borrow their clean concentric linework and compass-like letter placement for schematic or diagrammatic graphics.
