PROCEEDINGS FOR 1915 XXXIX 



9. — Bromocamphor Sulphonic Acid and Oxonium Compounds. 

 By D. Mcintosh, F.R.S.C. 



10. — Glycol Esters of the Fat Acids. By Prof. R. F. Ruttan, 

 F.R.S.C. 



11. — The Chemistry of Adipocere. By Prof. R. F. Ruttan, 

 F.R.S.C. 



12. — Notes on the Penetrating Radiation from the Earth. By 

 Prof. A. S. Eve, F.R.S.C. 



13. — On the Residual Ionisation in Gases over the Sea and on 

 the Surface of Lake Ontario. By Prof. J. C. McLennan, F.R.S.C. 

 and Mr. C. L. Treleaven, B.A. 



14. — On the Electrical Conductivity of air Confined in an Ice 

 Vessel. By Prof. J. C. McLennan, F.R.S.C. and Mr. Harold G. 

 Murray. 



15. — The Determination of the Distance of the Nearer Stars 

 from their Proper Motions and Radial Velocities. By Reynold K. 

 Young, Ph.D.; Presented by Dr. J. S. Plaskett, F.R.S.C. 



16. — Some Experiments on the Thermionic Current. By Prof. 



A. S. Eve, F.R.S.C. 



17. — Progress on the 72 inch Reflecting Telescope. By Dr. 

 J. S. Plaskett, F.R.S.C. 



18.— The Solar Rotation. By Dr. J. S. Plaskett, F.R.S.C. 



19. — Note on the Ultra Violet Spark Spectrum of Silicon. By 

 Prof. J. C. McLennan, F.R.S.C. and Mr. Evan Edwards, B.Sc. 



20. — On the Absorption Spectra of Zinc and other Metallic 

 Vapours. By Prof. J. C. McLennan, F.R.S.C. and Mr. Evan Ed- 

 wards, B.Sc. 



21. — On the Ionisation Potentials of Mercury Zinc and Cadmium 

 Vapours and their Single Line Spectra. By Prof. J. C. McLennan, 

 F.R.S.C. and Mr. J. P. Henderson, B.A. 



22. — Application of Wilson's Method to a Study of the Ioni- 

 sation Paths of Alpha Rays in Hydrogen. By Prof. J. C. McLennan, 

 F.R.S.C. and Mr. H. N. Mercer, B.Sc. 



23. — On the Delta Radiation from Zinc freed from Gases under 

 Bombardment by Alpha Rays. By Prof. J. C. McLennan, F.R.S.C. 

 and Mr. C. G. Found, B.A. 



24. — On the Measurement of Local Earth Tremors. By Dr. J. 



B. Porter. Presented by Prof. H. T. Barnes. 



' 25. — Geometrical Configurations that lead to the Solution of a 

 System of Partial Differential Equations of the Second Order. By 

 Chas. T. Sullivan. Presented by Dr. J. Harkness F.R.S.C. 



26. — Certain Sets of Orders of Coincidences Associated with an 

 Algebraic Equation. By Prof. J. C. Fields. 



Proc. 1915—4 



