LESSONS IN HORSE JUDGING. 



19 



one end, and the weight be between it and the 

 l^ower, so that weight and power describe concen- 

 tric arcs, the Weight moving through less space, 

 the lever is of the second order (Fig. 3, B). And 

 if, the fulcrum being still at one end, the Power 

 be between the Weight and Fulcrum so that the 



Figure 3. 



W^ 



5 



\ 



W 



i^ ^ — ^ — ?w 



Power and Weight describe concentric arcs, the 

 Power moving through less space, the lever is of 

 the third order (Fig. 3, (7). 



We shall now give examples of these; first in 

 mechanical levers: — 



Lever of First order =^ the beam of the balance. 



Lever of Second order = the common wheel- 

 barrow. 



Lever of Third order = the treadle of a lathe. 



In the living lever we find one joint will illus- 

 trate all three orders according to its position with 

 regard to the body. Let us take the hock-joint, 



