Universal horoscope of the Society of Jesus. Composite sundial in the form of an olive tree. When hung vertically, with pins placedat the nodes of the tree, this allows the time in each Jesuit province to be read. The base of the tree represents Rome. Additionally, the shadows of all the pins align to spell “IHS”, the logo of the Society of Jesus. From Ars Magna Lucis et Umbrae, 1646, p. 553