10 



LESSONS IN HORSE JUDGING. 



moving through less space^ the lever is of the third 

 order (Fig. 3, C). 



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F P /' 



hVV 



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 illustrate 

 all three orders according to its position with regard 

 to the body. Let us take the hock joint, which in 

 man is called the ankle. We find, still referring to 

 Fig. 3, that we have in the living lever a power in 

 front and another behind the leg bone. 



Now to illustrate oar three orders of levers, we 



