Manchester Memoirs, Vol. xlvzii. {igo},), No. ^. 19 



of Tables I. to IV., and it is not surprising that the results 

 should be less satisfactory. 



Final Experiments. 



As a final test of the method I made a series of 

 experiments on various metals (two experiments for each 

 metal). The time of transference in these experiments 

 was five seconds, the time in the calorimeter five minutes. 

 The piece of metal was in each case either a cylinder 

 with rounded ends or of a compact shape approximating 

 to this. The mass varied from 72 grammes (aluminium) to 

 250 grammes (lead). 



In the following table the results obtained by this 

 method are compared with the results obtained by the 

 method of mixtures.* 





Ice method, t 



Method of 

 mixtures.* 



Copper (pure) 



•0793 

 ■0300 



•1735 

 •0823 



•08365 



•08495 



■05195 

 •05085 



•0800 

 •0294 

 •1724 

 •0843 

 •0843 

 •0839 



•0514 

 •0498 



Lead (pure) 



Aluminium (approx. pure).. 



Nickel (approx. pure) 



Cobalt (approx. pure) 



Zinc (pure) 



Silver (approx. pure) 



Tin (pure^ 





* Proc. Roy. Soc, Vol. 72, p. 186. 



fEach of the numbers in this column is the mean of two, differing from 

 one another by more than one per cent, in only one case, that of aluminium, 

 for which the individual results were "1724 and '1746. The number given 

 for copper is the mean of two results which have been previously quoted 

 (end of footnote on p. 9). 



