PROCEEDINGS FOR 1918 XX 



3. The Law of Corresponding States Applied to Air. By A. 

 L. Clark, F.R.S.C., Queen's University. 



4. The Angle of Contact made with Glass by a Mercury Sur- 

 face which is Covered with another Liquid. By A. L. Clark, F.R.S.C. 

 Queen's University. 



5. On the Embodiment in Actual Numbers of the Kummer 

 Ideals in the Quadratic Realm. By J. C. Glashan, LL.D., F.R.S.C. 



6. Concerning a Representation of Irrational Numbers. By 

 Samuel Beatty, Ph.D. Presented by Professor J. C. Fields, F.R.S.C. 



7. Some Notes on the Hahfax Explosion. By Howard L. 

 Bronson, Ph.D., F.R.S.C. 



8. The Penetration of Frost in Concrete Structures. By Louis 

 Vessot King, D.Sc, F.R.S.C, McGill University. 



9. Researches on Sound Measurement with references to the 

 Testing of Fog-signal Machinery; an account of tests carried out at 

 Father Point, P.Q., September-October, 1917. By Louis Vessot 

 King, D.Sc, F.R.S.C, McGill University. 



10. A Comparison of some Anemometers. By A. Norman 

 Shaw, D.Sc, Macdonald College, McGill University, presented by 

 Dr. Louis Vessot King, F.R.S.C. 



11. New Series in Metallic Spectrum. By R. V. Zumstein. 

 Presented by Dr. E. F. Burton, F.R.S.C. 



12. Rhythmic Precipitation in Gelatine. By Miss A. W. 

 Foster. Presented by Dr. E. F. Burton, F.R.S.C. 



13. New Lines in the Ultra-violet Spectra of Certain Metals. 

 By D. S. Ainslie and D. S. Fuller. Presented by Dr. E. F. Burton, 

 F.R.S.C. 



14. The Radioactivity of the Natural Gases of Canada. By 

 John Satterly, D.Sc, F.R.S.C. 



15. The Viscosity of Rubber Solutions and its Relation to the 

 Commercial Properties of Rubber. By Richard Hamer. Pre- 

 sented by Dr. E. F. Burton, F.R.S.C. 



16. The Application of Wireless by the Dominion Observatory 

 for Longitude Determinations. By R. M. Stewart, M.A. Presented 

 by Dr. Otto Klotz, F.R.S.C 



17. The Transmission of Earthquake Waves. By Dr. Otto 

 Klotz, F.R.S.C, Director, Dominion Observatory. 



18. Tests of the 72-inch Mirror. By Dr. J. S. Plaskett, F.R.S.C 



19. On an Electrical Method of Determining the Lime Require- 

 ments of Soils. By C J. Lynde, Ph.D. Macdonald College, presented 

 by Dr. F. T. Shutt, F.R.S.C, Dominion Chemist. 



20. Sulphuric Acid Vacuum Pump. ByO. Maass. Presented 

 by Dr. R. F. Ruttan, F.R.S.C. 



