GREGORY, QUADRUPEDAL LOCOMOTION 



291 



third trochanter and which are one of the chief muscles used in lifting 

 the body at the hips. The great trochanter of graviportal animals is 

 very broad and heavy, but is more or less sessile, not jutting up so much 



biceb 



tensor 

 fasciae 



(fiidon, biceps- 

 to metacarpus 



tints 



tendo accessories 

 front biceps and 

 semitendinosui 



Resultant pt*U, tendons 

 of knee and ankle: 

 a) Flexion: tendo femoro- 



tarseus 



b) Extension: tendo plantaris\^ 



FjG 7. The tendons and muscle-pulls which hold in. place the fore- (I) and hind- (II) 



limbs of the standing horse 

 After Schmalz 



above the head of the bone. The reason is that the massive glutseus 

 medius is inserted more upon the flat top and outer side of this projec- 

 tion than upon its anterointernal slope (Fig. 6, II), a fact correlated 

 with the subvertical position of the ilium. 



