TRANSACTIONS 



OF 



THE ROYAL SOCIETY OF CANADA 



Series III DEC. 1 9 1 8 and MAR., 1919 Vol. XII 



SECTION III. MATHEMATICAL, PHYSICAL AND CHEMICAL 



SCIENCES 



CONTENTS 



Page 

 I Summary of Fog-Signal Researches carried out at Father Point, 



Que.. 1913 and 1917 By Louis Vessot King 109 



2. On the Penetration of Frost in Concrete Structures 



By Louis V. King 1 1 5 



3. The Carbonization of Lignites. Part II Large Laboratory Tests 



By Edgar Stansfîeld and Ross E. Gilmore 121 



4. A Comparison of Anemometers under Open Air Conditions 



By A. Norman Shaw 1 3 I 



5. The Use of a Simple Form of Pitot-Tube Under Open Air Con- 



ditions By A. Norman Shaw 1 3 .'> 



6. On the Embodiment in Actual Numbers of the Kummer Ideals in 



the Quadratic Realm By J. C Glashan 139 



7. The Utilization of Nitre Cake in the Manufacture of Superphos- 



phate By Frank T. Shutt and L. E. Wright MI 



8 An Agricultural Source of Benzoic Acid 



By P. J. Moloney and Frank T. Shutt 149 



9. The Radioactivity of the Natural Gases of Canada 



By John Satterly and J, C. McLennan 1 53 



10. The Analysis of Photographs of Fog Signals Obtained with the 



Phonodeik By Dayton C. Miller 161 



I 1. Concerning the Integrals of Lelieuvre By C. T. Sullivan 171 



12. Rational Plane Anharmonic Cubics By A. M. Harding 185 



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