KP 





OP THE 



Royal Institution of Great Britain 



Vol. XXI.— Part II. 



No. 109 



1915. 

 Jan. 22. Professor Sir James Dewar — Problems of Hydrogen and 



the Rare Gases 



Jan. 29. Dugald Clerk— Gaseous Explosions 



b'eb. 1. General Meeting 



Feb. 5. Professor Arthur W. Crossley — Science and Industrial 



Problems .*. 



Feb. 12. William S. Bruce — Recent Advances in Oceanography 



Feb. 19. Professor Henry E. Armstrong — The Visit of the British 



Association to Australia 



Feb. 26. The Rev. A. L. Cortie— Solar Eclipse of 1914 



March 1. General Meeting i. 



March 5. Professor E. B. Poulton — Mimicry and Butterflies 



March 12. Sir Rickman John Godlbe — Back to Lister 



March 19. Professor G. H. Bryan— The Modern Piano Player : Scientific 



Aspects ' 



March 26. Professor Sir J. J. Thomson — Experiments in Slow Cathode 



Rays 



April, 12. General Meeting ... 



April 16. Stephen Graham — The Russian Idea 



April 23. Major Percy S. Lelean— Military Hygiene at the War 

 April 30. Professor F. G. Donnan— Emulsions and Emulsification ... 



May 1. Annual Meeting 



May 3. General Meeting 



May 7. Professor O. W. Richardson— Electrons and Heat 



May 14. The Rev. E. H. Pearce — The Archives of Westminster Abbey 

 May 21. Edwaud Heron-Allen— Beauty, Design, and Purpose in the 



Foraminifera 



May 28. Sir John Jackson— Engineering Problems of Mesopotamia 



and Euphrates Valley 



June 4. Professor Sir Ernest Rutherford— Radiations from Ex- 

 ploding Atoms 



June?. General Meeting 



June 11. Henry Walpord Da VIES— Music and Poetry 



July 5. General Meeting 



Nov. 1. General Meeting 



Dec. 1. Special General Meeting 



Dec. 6. General Meeting 



PAGK 



543 

 269 

 303 



309 



331 



335 

 357 

 309 

 372 

 380 



397 



400 

 411 

 415 

 423 

 542 

 440. 

 441 

 445 

 454 



473 



480 



494 

 505 

 510 

 527 

 531 

 538 

 539 



ALBEMARLE STREET, LONDON, W. 1 

 October 1917 



