250 RECORD OF THE ROYAL SOCIETY 



Presented by 

 William Spottiswoode, Pres.R.S. (1825-83). Subscribers, 1885 



Mathematician and Physicist. Elected F.R.S. 1853 ; Treasurer 18/0 ; President 

 1878-83. (See p. 205.) 

 By the Hon. John Collier. 



Sir George Gabriel Stokes, Bart., Pres.R.S. (1819-1903). Subscribers, 1891 



Mathematician and Physicist. Discoverer in the theory of radiation. Elected 

 F.R.S. 1851 ; Secretary 1854-72 ; President 1885-90. (Seep. 205.) 



By H. von Herkomer, R.A. 



Johann Christoph Sturm (1635-1703). Theodore Haak, F.R.S., 1683 



Professor of Mathematics at Altdorf 1669-1703. Author of works on the 

 physical sciences. 



Attributed to Hey man Dullaert. 



H.R.H. The Duke of Sussex, Pres.R.S. (1773-1843). The Duke of Sussex 



Elected F.R.S. 1828; President 1830-8. (See p. 203.) 

 By Thomas Phillips, R.A. 



Brook Taylor, LL.D., F.R.S (1685-1731). Sir W. Young, Bart., F.R.S. 



Mathematician. His ' Methodus Incrementorum ' developed the method of 

 finite differences, and contained ' Taylor's Theorem ', fundamental in analysis. 

 Elected F.ll.S. 1712 ; Secretary 1714. Contributed many papers to the 

 ' Philosophical Transactions '. 



Painter unknown. 



Vincenzio Viviam, F.R.S. (1622-1703). Dr. Wilson, 1883 



Physicist and Mathematician. Pupil of Galileo and Torricelli. Constructed 

 the first barometer under the latter's supervision. Elected For.Mem.R.S. 1696. 



By Piero Dandini. 



Richard Waller, F.R.S. R. Waller, Esq., F.R.S., 1711 



Elected F.R.S. 1681 ; Secretary 1687-1709 ; edited the ' Philosophical Trans- 

 actions ' 1691-5. Author of several physiological papers in the ' Transactions '. 



By T. Murray after Sir Godfrey Kneller. 



John Wallis, D.D., F.R.S. (1616-1703). Mr. Wallis, 1704 



Mathematician, Scholar, Theologian. Savilian Professor of Geometry 1649. 

 His ' Arithmetica Infinitorum ' contained germs of the differential calculus. 

 Was one of the originators of the Royal Society, and contributed papers to the 

 'Transactions'. The Archives R.S. contain numbers of his letters on scientific 

 subjects. 



By Gerard Soest. 



