28 



ANIMAL MECHANICS. 



Table II. — Work done by the Shoulder Muscles employed in 

 holding the loaded Arms in the horizontal Position, with the 

 Palms upwards. 





Time of Ex- 

 haustion. 



"Work done. 



No. I. 



200 sees. 



2108.3 



No. 2. 



210 „ 



2310.O „ 



No. 3. 



3°o „ 



27I5-& » 



No. 4. 



180 „ 



189O.O „ 



No. 5. 



240 „ 



275°-° >» 



Means, 



226 sees. 



2354 78 la. 



I was led by several considerations to the conclusion, that 

 it was probable that the total work done in exhausting 

 muscles varies inversely as the rate of doing the work ; from 

 which it would follow that the square of the total work varies 

 as the time of doing the work ; this would give us the 

 relation 



(Total work) 2 » v 



^ ™ - = Constant. (8) 



lime v 7 



Calculating this constant from Tables I. and II., I found 

 the following results : — 



Product of Total Work and Bate of Work. 





First set 

 of Ex- 

 periments. 



Second set 



of Ex- 

 periments. 



Ratio. 



No. r. 



19852 



22224 



I. 12 



No. 2. 



23520 



254IO 



I.08 



No. 3. 



20882 



24581 



I. 17 



No. 4. 



16478 



19845 



I 20 



No. 5. 



31873 



3I5IO 



O.99 







Mean, 



111 



