316 On the Heat Production Associated with Muscular Work. 



500r 



O 



10 20 30 



M KILOGRAMS. 



80 



40 50 60 70 



Fig. 5.— Eelation between H and M calculated from equation (5). 



The same results are tabulated in Table III. The differences between the 

 results given by the formula and those found from observation are, with 

 the exception of the boy of weight 43'7 kgrm., in no case large, and it 

 would appear that the relation 



W 



H = a + iM + - 



(6) 



« + /3M' 



where a, b, a., /3 are constants having for Prof. Macdonald's experiments the 

 values given in formula (5), expresses, within the limits of experimental 

 error, the relation between the work done, the heat produced, and the weight 



