1913. PAGB 



March 14. — A. E. H. Tutton— Great Advance in Crystallo- 

 graphy 677 



April 4. — James J. Dobbie— The Spectroscope in Organic 



Chemistry 703 



„ 7.— General Meeting 714 



„ 11. — Chaeles J. P. Cave— The Winds in the Free Air 717 



„ 18. — Thomas Martin Lowry — Applications of 



Polarized Light 727 



„ 25. — Professor John Garstang — Meroe : Four Years' 



Excavations of the Ancient Ethiopian Capital 738 



May 1. — Annual Meeting 740 



„ 2. — ^Henry George Plimmer— Blood Parasites ... 742 



„ 5. — General Meeting 750 



,. 9. -Frank Balfour Browne — The Life-History 



of a Water-Beetle 754 



„ 16. — Captain Cecil G. Pawling — The Pygmies of 



New Guinea ... 765 



„ 23.— Professor Silvanus P. Thompson— The Secret 



of the Permanent Magnet ... 800 



„ 80. — Owen Seaman — Parody 775 



2.— General Meeting 776 



June 6.— Francis Ward — Reflection and Refraction of 

 Light as Concealing and Revealing Factors in 



Sub- Aquatic Life 7. SO 



July 7. — General Meeting ... ... ... ... ... 786 



Nov. 3. — General Meeting 789 



Dec. 1.— General Meeting 796 



Index to Volume XX 801 



