TABLE OF CONTENTS 
A Comparison of the Ionization within closed vessels due 
to Réntgen and Gamma rays. By Dr. A. 8. Eve, 
A New Method of Determining the Range of Molecular 
Action and the Thickness of Liquid Films. By M. M. 
GEAR VAR AN Oi eek ale a nace PR EE BO ROOM See 
On the Resolution of the Spectral Lines of Mercury by 
Lummer Plates. By Pror. J.C. MCLENNAN........ 
On a Thermodynamic Measure of the Degree of Polymeri- 
zation of Liquid Substances. .By M. M. GARVER. ..... 
The Heat of Solution of Radium Emanation. By R. W. 
Bornn, MeSe ube De hee bakin re 
Further Experimental Work Towards the Nitrogen-Enrich- 
ment of Soils. By Franx T. SaurT, M.A., F.IC., 
Dominion Chemist, and A. T. CHARRON............ 
Movement of an Earth Particle During Microseisms. By 
Oro Ko Jab Dy AsHe RAS iC ae oa aed eee ee ee 
On the Absorption of Rôntgen Rays in Air. By Dr. A.S. 
Eve, F.R.S.C., and F. H. Day, M.Sc., McGill Univer- 
Scattering and Attenuation of Light in Gaseous Media 
with Application to the Intensity of Sky Radiation. 
By Louis Vessot Kine, B.C., (Cantab.), Lecturer in 
Physics, McGill University, Montreal............... 
SECTION IV. 
Presidential Address. By DRsJ. GA ADAMI) A PTE 
The Life Cycles of the Pacific Coast Salmon Belonging to 
the Genus Oncorhynchus, as Revealed by their Scale 
and Otolith Markings. By J. Puayrarr MCMURRICH, 
The Gold of the Klondike. By J. B. TYRRELL, F.G.S.... 
On Some Organs in the Cervical Region of the Frog. By 
FLORENCE DIÉDHOMPSON Keen eee eee. os Noein. 
On the Temporary Suspension of Vitality in the Fruit- 
Bodies of Certain Hymenomycetes. By A. H. Rear- 
NALD BULLER, and A’ CAMERON 0 RUE. 
The Abdominal Chromaphil Body of the Dog. By SWALE 
VINCENT MED: DES GR cua mine ois cre eet eters 
81 
93 
131 
61 
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