CONTENTS. 



I. 



ELECTROCHEMICAL INVESTIGATION OF LIQUID AMALGAMS OF THALLIUM, INDIUM, AND 

 TIN. BY T. W. RICHARDS AND J. H. WILSON. 



PAGE 



Introduction I 



Values of Constants 3 



Preparation of the Amalgams 8 



Densities of the Amalgams 12 



The Cell 15 



The Potentiometer 17 



Electromotive Force between Thallium Amalgams 20 



Electromotive Force between Indium Amalgams 25 



Electromotive Force between Tin Amalgams 27 



Temperature Coefficient of the Amalgam Cells 30 



Application of the Equation of Cady 31 



Application of the Equation of Helmholtz 33 



Summary 37 



II. 



ELECTROCHEMICAL INVESTIGATION OF LIQUID AMALGAMS OF ZINC, CADMIUM, LEAD, 

 COPPER, AND LITHIUM. BY T. W. RICHARDS AND R. N. GARROD-THOMAS. 



Introduction 39 



Zinc Amalgams 39 



Electromotive Force between Zinc Amalgams 4 1 



Determination of the Temperature Coefficients of Cells containing Zinc 



Amalgams 43 



Lead Amalgams 47 



Copper Amalgam 5 



Iron Amalgam 54 



Lithium Amalgams 55 



Application of the Equation of Cady 57 



Equation of Helmholtz 64 



Comparison of Deviations from Concentration Law 68 



Summary 7 1 



in 



