The _Lucasian Professorship of Mathematics_ was founded in 1663 by Henry Lucas. The successive occupants of the chair have been: Isaac Barrow, 1664-1669; Isaac Newton, 1669-1702; William Whiston, 1702-1711; Nicholas Saunderson (Sanderson), 1711-1739; John Colson, 1739-1760; Edward Waring, 1760-1798; Isaac Milner, 1798-1820; Robert Woodhouse, 1820-1822; Thomas Turton, 1822-1826; George Biddell Airy, 1826-1828; Charles Babbage, 1828-1839; Joshua King, 1839-1849; George Gabriel Stokes, 1849-1903; Joseph Larmor, 1903 _et seq._ The _Plumian Professorship of Astronomy and Experimental Philosophy_ was founded in 1704 by Thomas Plume. The successive occupants of the chair have been: Roger Cotes, 1707-1716; Robert Smith, 1716-1760; Anthony Shepherd, 1760-1796; Samuel Vince, 1796-1822; Robert Woodhouse, 1822-1828; George Biddell Airy, 1828-1836; James Challis, 1836-1883; George Howard Darwin, 1883-1912; Arthur Stanley Eddington, 1913 _et seq._ The _Lowndean Professorship of Astronomy and Geometry_ was founded in 1749 by Thomas Lowndes. The successive occupants of the chair have been: Roger Long, 1750-1771; John Smith, 1771-1795; William Lax, 1795-1836; George Peacock, 1836-1858; John Couch Adams, 1858-1892; Robert Stawell Ball, 1892-1913; Henry Frederick Baker, 1914 _et seq._ The _Sadleirian Professorship of Pure Mathematics_ was founded, in 1863 from a benefaction given in 1710 by Lady Sadleir. The successive occupants of the chair have been: Arthur Cayley, 1863-1895; Andrew Russell Forsyth, 1895-1910; Ernest William Hobson, 1910 _et seq._ The _Cavendish Professorship of Experimental Physics_ was founded in 1871 by the University; the laboratory attached being built at the expense of the then Chancellor, the Duke of Devonshire. The successive occupants of the chair have been: James Clerk Maxwell, 1871-1879; John William, Baron Rayleigh, 1879-1884; Joseph John Thomson, 1884 _et seq._ The _Professorship of Mechanism and Applied Mechanics_, with laboratories and shops attached, was founded by the University in 1875. The successive occupants of the chair have been: James Stuart, 1875-1890; James Alfred Ewing, 1890-1903; Bertram Hopkinson, 1903 _et seq._