TABLE OF CONTENTS V 



XI. Wireless Time Signals from the St. John Observatory of 

 the Canadian Meteorological Service. By D. L. Hut- 

 chinson. Communicated by R. F. Stupart-^ 153 



XII. A Note on the Zamhoni Pile. By A. S. Eve, D.Sc. 



Communicated by Dr. H. T. Barnes 155 



XIII. Local Temperature Forecasting by Differences in Tem- 



perature between Mount Royal and McGill College 

 Observatoiy (Diagrams). By Professors C. H. 

 McLeod, Ma.E., and H. T. Barnes, D.Sc 157 



XIV. The Construction and Calibration of very High Resist- 



ances and a Standard of High Resistance (Dia- 

 grams). By Howard L. Bronson, Ph.D. Com- 

 municated by Prof. H. T. Barnes 163 



XV. Production of Hydrogen Peroxide by Contact of Metals 

 with Water containing dissolved Oxygen. By G. W. 

 Shearer, M.Sc. Communicated by Prof. H. T. 



Barnes 171 



XVI. The Mineral Constituents of the Ottawa River Water, 

 1907. By Frank T. Shutt, M.A., and A. Gordon 



Spencer, M.Sc 175 



XVII. The Nitrogen Compounds in Rain and Snow. By Frank 



T. Shutt, M.A 181 



XVIII. Deficient Humidity of the Atmosphere. II. Comparisons 

 of Various forms of Hygrometers. By T. A. Star- 

 key, M.B., and H. T. Barnes, D.Sc 187 



XIX. Some Phenomena of the Persistence of Vision (Dia- 

 grams). By Prof. Frank Allen. Communicated 



by Dr. H. T. Barnes 195 



XX. The need of a "Rational Almanac." By Moses B. 

 CoTswoRTH, F.G.S., with introduction by Sir Sand- 

 ford Fleming 209 



XXI. Researches in Physical Chemistry carried out in the 



University of Toronto during the past year. By • 



Prof. W. Lash Miller 243 



XXII. Har court and Esson's Idea in Chemical Mechanics 



'(Diagrams). By W. Lash Miller 245 



XXIII. An outli/ne of Analytical Spherical Geometry (Dia- 



grams). By S. Beatty, B.A. Communicated by 

 Prof, Alfred Baker 255 



XXIV. Some New Symmetric Function Tables. By Prof. W. 



H. Metzler 275 



