ANIMAL MECHANICS, 



No, i.—${r. Niphers Experiments (Useful Ejfeet)^Right Arm 

 {raising Weights at given rate). 





Useful 

 Effect 

 (observed) . 



Useful 

 Effect 

 (calcu- 

 lated). 



Difference. 



a kil. 



o 



0 



P 



i » 



*55 



250 



+ 5 



2 „ 



194 



222 



-"a? j 



3 „ 



183 



187 



- 4 



4 » 



150.8 



160 



- 9. 2 



5 



146.5 



139 



" 7-5 



6 „ 



129 





+ 6 



7 >, 



1 1 0. 6 



110 



+ 0.6 



3 „ 



102. 4 



99 



+ 3>4 



No, t^Mr, Nipher's Experiments (Useful Effect) — Left Arm 

 {raising Weights at given rate). 



to, 



Useful 

 Effect 

 (observed). 



Useful 

 Effect 

 (calcu- 

 lated). 



Difference. 



0 kil. 



0 



0 



0 



1 



? x 3 



193 



+ 20 



2 „ 



150 



176 



-26 



3 u 



150 



151 





4 u 



126,8 



13 1 



- u 



5 u 



123.5 



122 



f l-.J 



6 „ 



ro6.8 



J02 



+ 4.8 



1 



89.6 



9» 





§ J5 



76 



82 



: I" 



The maximum effects, calculated from (132), are 



Maximum effect ~ = [ aim ^ L 



2« f 193,2 (Left arm) J 



Fourth Illustration of Law of Fatigue,**- Another, and very 

 interesting, method of testing the Law of Fatigue consists 

 in raising weights held in the hand or hands, from the vertical 

 2n2 



