Little remains of the scientific apparatus of the early period of the Royal Society, but through the kindness of the Dean and Governing Body of Christ Church, the entire contents of the cabinet of philosophical apparatus of the Earl of Orrery, who flourished some thirty years after the foundation of the Society, is on exhibit, and the actual astronomical model, the "Orrery," made for him and called after his name.[17] [17] Among other notable exhibits there are: 1. A series of astronomical volvelles in manuscripts and printed books. 2. The printed evidence that Leonard Digges of University College was the inventor of the telescope many years before Galileo. 3. The mathematical work of Robert Recorde of All Souls' College, in which he suggested the St. Andrew's Cross as the sign of multiplication, and uses symbols +, -, =. 4. The earliest known slide-rule in a circular form, recently discovered in St. John's College. 5. The early vellum and wooden telescopes of the Orrery Collection. 6. An original Marshall microscope. 7. Early surveying instruments, including the great quadrate of Schissler. The story of the free cities of Greece shows how a love of the higher and brighter things in life may thrive in a democracy. Whether such love may develop in a civilization based on a philosophy of force is the present problem of the Western world. To-day there are doubts, even thoughts of despair, but neither man nor nation is to be judged by the behaviour in a paroxysm of delirium. Lavoisier perished in the Revolution, and the Archbishop of Paris was butchered at the altar by the Commune, yet France was not wrecked; and Russia may survive the starvation of such scholars as Danielevski and Smirnov, and the massacre of Botkin. To have intelligent freemen of the Greek type with a stake in the State (not mere chattels from whose daily life the shadow of the workhouse never lifts), to have the men and women who could love the light put in surroundings in which the light may reach them, to encourage in all a sense of brotherhood reaching the standard of the Good Samaritan--surely the realization in a democracy of such reasonable ambitions should be compatible with the control by science of the forces of nature for the common good, and a love of all that is best in religion, in art, and in literature.