IV THE ROYAL SOCIETY OF CANADA 
Comparison of the Callendar Sunshine Recorder and the Angstrom 
Pyrheliometer: -By. JOHN PATTERSONS. CEUX 51 
On the Release of Radium Emanation from water at different 
Temperatures by the Bubbling Method. By J. Moran. . oF 
The Double Salts formed by Sodium and Potassium Carbonates 
By J. W. BAIN AND C. E. OLIVER.. 65 
The Occlusion of Iron by the Ammonium Phos phe: Molybdate 
Precipitate. By E. H. ARCHIBALD AND H. B. KEEGAN 67 
The Solubility of Aluminium Hydroxide in Solutions of Ammonia 
and of Ammonium Salis. By E. H. ARCHIBALD AND 
Nica ABA STAIN ei cep nee AO. eeu nye ene oe? aes hee 69 
The Turn of Tidal Streams in Relation to the Time of the Tide. 
Bye Wee ELLE DAWSON: RESORT Shale cone 11 
A Comparison of Radium Standard Solutions. By J. Moran.. i 
Improved Methods in Hygrometry. By A. NORMAN SHAW..... 85 
Production of Ring Ice or Hoar Frost in Pipes. By H. T. 
PS MRI ES Aire Re ec ont Sra vee hy heed ee he ea 93 
The Algrebraic Basis of Certain Bessel Series, including more 
particularly the Newmann Series of the Second Kind. 
ya ainies ada emesa.. ne Rh dint ean Ne TU 97 
Concerning a Certain Completely Integrable System of Partial 
Differential Equations. By CHARLES T. SULLIVAN... 121 
Contact Resistance between Conductors in Relative Motion. By 
VIOLET EME NIRV aye Ae eh Pee see eat eae ae 135 
Contact Resistance in Oil. By H. E. REILLEY AND VIOLET 
ENE eae PR aos, Sigh Pe Sine Clb oo need Re 145 
On the Initial Charged Condition of the Active Deposits of 
Radium, Thorium and Actinium. By H. G. HENDER- 
SON HSE sited 2e D GEIS ee ea tees AN ER Wey aaa 151 
iuman Adipocere By Re (Fo RUPDAN. ©. ce OR PRET 169 
Alternate Numbers as Geometrical Indices. By J.C.GLASHAN.. 171 
SECTION IV. 
Presidential Address.—Notes on the Geology of Nelson and Hayes 
agers. wis yet: TYRRELL tees aa: cee ec eee 1 
Chondropystrophia Fetalis; A Study in Development. By 
AUBERT IG, MIIGHOLLS 2% LAS cits «sa Ste RENE 29 
Ganoid Fishes from near Banff, Alberta. By LAWRENCE M 
