44 



ELECTROLYSIS. 



RELATIVE CONDUCTIVITY OP METALS. COMPARED TO SILVER AND PURE 

 COPPER. (Lazare Weiller.) 



INFLUENCE OF THE TEMPERATURE ON THE RESISTANCE OF METALS. 



(Matthiessen.) 



According to the formula R=r(l+a+6 1*}. 

 R resistance at t ; r resistance at ; t centigrade degrees. 

 Value of numerical coefficients a and 6 for a few metals. 



