76 AVERAGE VALUES IN A CANONICAL 



For h = 1, this gives 



which agrees with (191). 

 From (215) we have also 



In like manner from the identical equation 



all , , 



config. conflg. 



(221) 



--/ rf\^ - 

 we get i? = e (^ 2 ^ J e , (222) 



and 



With respect to the kinetic energy similar equations will 

 hold for averages taken for any particular configuration, or 

 for the whole ensemble. But since 



the equation 



reduces to 



