AND THE RELATION OF SPECIFIC HEAT TO ATOMIC WKKMIT. 



285 



The values for X were taken from Professor JOLY'H paper, those required being 

 contained in the following abstract : 



The value of 8 was taken uniformly as "OOOG. 



The first metal operated upon was a specimen of commercial sheet cobalt obtained 

 from Messrs. WIGOIN, of Birmingham, for the analysis of which I am indebted to 

 Mr. F. II. PENN, Assoc. H.C.S. It contained 



Copper . 



Iron ...... 



Nickel .-.. . . 



Carbon ;'.'.. . . 



Cobalt (by difference) 



'62 per cent. 

 1-92 

 8-30 



49 



88-67 



100-00 



The specific gravity of the cobalt was 8 "96. 



The following data and results were obtained. The boiling temperature, t, was 

 usually taken from observation of the barometer. 



2 H 2 



