PROCEEDING 



OF THE 



IRo^al 3n0titution of (5rca 



Vol. XX. -Part I. 



ion. 



Jan. 20. 



Jan. 27. 



Feb. 3. 

 Feb. 6. 

 Feb. 10. 

 Feb. 17. 



Feb. 24. 



March 3. 

 March 6. 

 March 10. 

 March 17. 

 March 24. 

 Mt.:ch31. 



April 3. 

 April 7. 



April 28. 



May 1. 



May 5. 



May 8. 

 May 12. 



May 19. 



May 26. 



June 2. 

 June 9. 



June 12. 

 July 3. 

 Nov. 6. 

 Dec. 4. 



I'AGB 



Pbofessor Sir James Dewar— Chemical and Physical Change 



at Low Temperatures . . . . . . . . . . . . 256 



Professor William H. Bragg — Radioactivity as a Kinetic 



Theory of a Fourth State of Matter . . . . . . . . 1 



Arthur E. Shipley, Esq.— Grouse Disease 11 



General Meeting . . . . . , . . . . . . . . 27 



Sir Sidney Colvin — Robert Louis Stevenson . . . . . . 33 



Professor Henry E. Armstrong — The Stimulation of Diges- 

 tive Activity 53 



Professor Jean Peruix — Mouvement Brownien et Realit6 



Moleculaire . . . . (In French) 54 



F. A. DiXEY, Esq.— The Scents of Butterflies 73 



General Meeting 86 



The Hon. Charles A. Parsons— Recent Advances in Turbines 91 



John H. Balfour-Browne, Esq. — Water Supply . . , . 99 



Sib David Gill— The Sidereal Universe 116 



Professor H. S. Helk-Shaw — Travelling at High Speeds on 



the Surface of the Earth and above it . . . . . . . . 117 



General Meeting . . . . . . . . . . . . . . 136 



Professor Sir J. J. Thomson— A New Method of Chemical 



Analysis 140 



Professor W. M. Flinders Petrie — The Revolutions of 



Civilization 149 



Annual Meeting . . . . . . . . . . . . . . 151 



Professor Martin O. Porster — New Organic Compounds of 



Nitrogen 152 



General Meeting '.. 162 



Professor William Stirling— Biology and the Cinemato- 

 graph 166 



Professor R. W. Wood— Recent Experiments with Invisible 



Light 180 



Professor Gilbert Murray — The Greek Chorus as an Art 



Form 192 



Commendatore G. Marconi — Radiotelegraphy. . . . . . 193 



Professor Svante Arrhenius— Applications of Physical 



* Chemistry to the Doctrine of Lnmunity . . . . . . 210 



General Meeting 237 



General Meeting . . . . . . . . . . . . . . 241 



General Meeting . . . . . . . . . . . . . . 244 



General Meeting . . . . . . . . . . . . 251 



• 



ALBEMARLE 



LONDON 



STREET, 



Jid>/ 1913 



PICCADILLY 



5s. 



