TABLE OF CONTENTS V 



On the use of the Kelvin- Varley Slide Potentiometer. By A. 



N. Shaw 89 



On the Diurnal Changes in Magnetic Declination at A gin- 

 court, 1902-1912. By W. E. W. Jackson 105 



The Effect of an Electrostatic Field on a Two-Looped Carbon 



Filament Lamp. By A. S. Eve 113 



To Determine by Rational Operations whether an Algebraic 



Curve is or is not Reducible. By J. C. Fields 115 



Notes on the Possible Effect of a Longitudinal Magnetic 

 Field on a Radial Current in a Bunsen Flame. By A. A. 

 Scott 121 



Contact Resistance of Metals and Alloys. By H. E. Reilley 125 



On Osmosis in Soils. By C. J. Lynde and J. V. Dupré . . . 133 



The Cubical Expansion of Vitreous Quartz. By N. E. Whee- 

 ler 139 



The Spectroscopic Binary 6 2 Tauri. By J. S. Plaskett. . . 157 



A Systematic Scheme for Experimental Work with Fertilizers. 



By A. T. Stuart 167 



Notes on the Thermionic Current in a Carbon Filament Lamp. 



By A. S. Eve 177 



The Penetrating Power of the y Rays excited in lead by the 

 ft Rays of Radium E. By J. A. Gray 181 



Two Identities Associated with Generalized Legendian Co- 

 efficients. By James Harkness 185 



SECTION IV. 



On the Systematic Position of Haplobothrium globuliforme 



Cooper. By A. R. Cooper 1 



The Distribution of Iodine in Plant and Animal Tissues. 



By A. T. Cameron 7 



On New Species of A spider êtes from the Belly River formation 

 of Alberta, with further information regarding the Structure 

 of the Carapace of Boremys pulchra. By L. M. Lambe. . . 11 



Description of a New Species of Platysomus from the neigh- 

 bourhood of Banff , Alta. By L. M. Lambe 17 



Bibliography of Canadian Botany for the year 1913. By A. 



H. MacKay 25 



Observations on the Feeding Habits of the Stable Fly, Stomoxys 



calcitrans L. By C. G. Hewitt 37 



On Circulating Excitations in Heart Muscle and their possible 



relation to tachycardia and fibrillation. By G. R. Mines. 43 



Bibliography of Canadian Entomology for the year 1913. 



By C. J. S. Bethune 53 



