LIST OF ILLUSTRATIONS 



Facing page 



PLATE III. THE PRINCIPAL LIBRARY, BURLINGTON HOUSE . 6 



[On the table is seen the Air-pump with double 

 barrel, constructed and presented to the 

 Society in 1662 by the Hon. Robert Boyle, 

 and Dr. Priestley's Electrical Machine. 

 For an account of the Library, see Appendix, 

 p. 125.] 



IV. PHOTOGRAPH OF AN EARLY PAGE OF THE CHARTER 



BOOK ...... 8 



V. PHOTOGRAPH OF A PAGE (1838) OF THE CHARTER 



BOOK . . . . . .10 



VI. THE MACE OF THE ROYAL SOCIETY (1663) . 12 



[For history and description of Mace, see p. 17.] 



VII. PHOTOGRAPH OF THE MASK OF THE FACE OF SIR 



ISAAC NEWTON . . . . .14 



[From a cast taken after death by Roubillac.] 



,, VIII. ORIGINAL REFLECTING TELESCOPE OF SIR ISAAC 



NEWTON ...... 16 



[Made with his own hands in 1671. The Tele- 

 scope is standing on the bound original 

 Manuscript of the Principia, see p. u.] 



,, IX. SIR THOMAS GRESHAM (1519-1579) . . 24 



[Engraving by H. Robinson, after oil painting 

 by Holbein, in the Hall of the Mercers' 

 Company.] 



X. FRANCIS BACON (1561-1626) . . .30 



[Engraving by W. H. Worthington, after P. 

 Vansomer.] 



XL CHARLES n. (1630-1685), Founder . . -36 



[Sir P. Lely.] 



XII. WILLIAM HARVEY (1578-1657) . . -44 



[De Reyn.] 



XIII. HON. ROBERT BOYLE (1627-1691), F.R.S. . . 50 



XIV. SIR CHRISTOPHER WREN (1632-1723), P.R.S. . 58 



[Sir P. Lely, Sir G. Kneller (?).] 



XV. JOHN EVELYN (1620-1706), Sec. R.S. . . 66 



[Kerseboom.] 



