CAPACITY FOR HEAT OF METALS AT DIFFERENT TEMPERATURES. 178 



Messrs. Johnson and Matthey state : 

 " Approximately, 99'95 per cent. Zn." 



The agreement between the results on repetition at the same temperature was less 

 satisfactory than usual, the extreme difference from the adopted value at C. being 

 0'3 per cent, (see Table XIV.). 



TABLE XXIV. Silver. 

 Weight, 3733 grins. Density, 10'45G. 



S, = 0-05560 (I + 0-000339W -O'OOOOOOHIf*). 



Messrs. Johnson and Matthey state : 

 " Better than 999 '9 fine." 



At C. two series of experiments by " total heat " method were performed 



With thermometers AB, CD, ten experiments ; probable error, 



0'05 per cent. ; S = 0'05551. 



With thermometers AA, BB, six experiments ; probable error, 



0'04 per cent. ; S = 0'05575. 



TABLE XXV. Cadmium. 



Weight, 3070 grms. Density, 8T>52. 



S, = 0' 



+ > 000520<-0 1 000000725J :I ). 



