B. Period of Suspension of the Hind Legs in the 



Gallop. 

 A similar analysis for the period of suspension of the 

 hind legs at the gallop shows the following (Fig. 7) : 



3 

 I 



f 

 Fig. 7 



a. Slope of the ilium to the horizontal : 

 Position o 3^° 



1 35° 



2 39° 



" 3 40° 



" 4 42° 



(At position 4 the foot is grounded.) 



b. Slope- of the femur to the horizontal : 

 Position o 81 



I 76° 



2 54° 



" 3 53° 



43 



