50 Reynolds and Moorby, Equivalent of Heat. 



Omitting Series V. for the reasons mentioned, the 

 mean value of K, obtained by dividing the sum of the 

 differences of work in the above determinations by the 

 corresponding sum of the differences of heat, is 



K = 777-85. 

 From this the greatest variation is less than 0*3 per cent 

 in individual determinations, and for the means given by 

 each series the greatest variation is less than 003 per cent. 



Series VIII. and IX. 



Differed from the last series considered in that the 

 light trials only carried a moment of 400 ft.-lbs. 





Number of 

 Determi- 

 nations. 



Values of K obtained. 



iVIaximum. 



Minimum. 



Mean. 



Series VIIL 

 Series IX. 



2 



3 



778-47 

 778-54 



778-07 



777-78 



778-27 

 778-22 



Series X. and XI. 



These trials were made in July, 1896, after the careful 

 checking of the whole of the apparatus afresh. The 

 results are appended. 





Number of 

 Determi- 

 nations. 



Values of K obtained. 



Maximum. 



Minimum. 



Mean. 



Series X. 

 Series XL 



3 

 3 



778-44 

 778-07 



776-89 

 777-56 



777-74 

 777-88 



These trials were run under precisely similar con- 

 ditions as to load, &c., as obtained in Series II. to VII. 



The mean value obtained for the two Series was 

 K = 777-85, 

 which happened to agree exactly with that given by the 

 former set. 



