An assortment of Orreries; 1. New Portable Orrery (Detail), W. Jones (Made & sold by W. & S. Jones), 30 Holborn, London'. [Second inscription reads 'A table of the principal affections of the Planets, January 1st 1794. Published as the Act directs by W & S Jones']. 2. 'The Four Wheel'd Orrery' from A dissertation upon the Phaenomena of the Harvest Moon; also, The description and use of a New Four-Wheel'd Orrery, and an Essay upon the Moon's turning round on her own axis, by James Ferguson (London, 1747). 3. & 4. Thomas Wright's 'Machina Coelestis', 'The Orrery' or the 'Great Orrery' (Vandergucht), 1730. 5. James Ferguson, (Engravings); Astronomical 'Orrery' based upon Sir Isaac Newton's principles of planetary orbit; reproducing the movements of the planets Mercury, Venus and the Earth, c.1790. [James Ferguson (1710–1776) was a natural philosopher and inventor of scientific instruments. An orrery is a mechanical model of the Solar System, based on Copernican principles].