CONTENTS. IX 



Page 



8. On the Influence of Magnetism on the Discharge of Electricity through 



Gases. By Professor Arthur Schuster, F.R.S 633 



9. On a Galvanometer with Twenty Wires. By Professor Lord Rayleigh, 

 LL.D., F.R.S 633 



MONDAY, SEPTEMBER 1. 



1. On the Connection between Sunspots and Terrestrial Phenomena. By 

 Professor Arthur Schuster, F.R.S 634 



2. On certain Short Periods common to Solar and Terrestrial Meteorological 

 Phenomena. By Professor Balfour Stewart, M.A., LL.D., F.R.S., 

 and Wm. Lant Carpenter, B.A., B.Sc, F.C.S 634 



3. Second Report of the Committee for the Harmonic Analysis of Tidal Obser- 

 vations 634 



4. Report of the Committee for reducing and tabulating the Tidal Observa- 

 tions in the English Channel made with the Dover Tide-gauge, and of 

 connecting them with observations made on the French Coast 634 



5. On the Importance of Tidal Observations in the Gulf of St. Lawrence and 



on the Atlantic Coast of the Dominion. By Professor Johnson. LL.D... 634 



6. Report of the Committee for considering the best methods of recording 

 the Direct Intensity of Solar Radiation 635 



7. Fourth Report of the Committee on Meteoric Dust 635 



8. On the Spot Spectrum from D to B. By the Rev. S. J. Perry, F.R.S.... 635 



9. On Recent Progress in PhotogTaphing the Solar Spectrum. By Professor 



H. A. Rowland 635 



10. On an Induction Inclinometer adapted for Photographic Registration. By 

 Charles Carpmael, M.A 635 



11. On an Electric Control for an Equatorial Clock-movement. By the Earl 



oe Rosse, F.R.S 636 



12. On Polishing the Specida of Reflecting Telescopes. By the Earl op 

 Rosse, F.R.S 637 



13. An Account of some preliminary Experiments with Biram's Anemometers 

 attached to Kite-wires. By Professor E. Douglas Archibald, M.A 639 



14. On the recent Sun-glows and Halo in connection with the Eruption of 

 Krakatoa. By Professor E. Douglas Archibald, M.A 641 



15. On Whirlwinds and Waterspouts. By Professor James Thomson, LL.D., 

 F.R.S .. 641 



16. On the Formation of Frasil Ice. By G. H. Henshaw 644 



17. Note on the Internal Temperature of the Earth at Westville, Nova Scotia. 



By H. S. Poole, F.G.S 644 



18. On the Formation of Mackerel Sky. By Dr. H. Muirhead 644 



TUESDAY, SEPTEMBER 2. 

 Subsection of Mathematics. 



1. Note on Newton's Theory of Astronomical Refraction, and on his Expla- 

 nation of the Motion of the Moon's Apogee. By Professor J. C. Adams, 

 F.R.S 645 



2. Historical Note on Continuity. By the Rev. C. Taylor, D.D 645 



3. On a Model of the Cylindroid, showing the Nodal Line. By Professor 

 Robert S. Ball, LL.D., F.R.S 646 



