366 



ANIMAL MECHANICS. 



3. Tensor vagince femoris. — This muscle takes origin from 

 a length of 2.76 in. along the lower margin of the anterior 

 portion of the ilium, and is inserted by a broad fascia into 

 the outer side of the thigh. 



The origin and insertion are shown in Fig. 93, at AB and 

 A'B'. 



Producing the fibres to meet in O, and dividing the angle 

 A OB into three equal parts, I found — * 



Lion ( Tensor vagince femoris). 



Angle. 



l-V 



I cos 9 



I' cos 0 



o° 00' 



6 



34 in. 



14. 10 in. 



7 • 85 m. 



5 '5 



7 



75 m 



14. 80 „ 



7.06 „ 



10 30 



9 



20 



15.60 „ 



6. 70 



15 45 



10 



40 „ 



16.25 >» 



5.91 i» 



From these measurements we obtain — 



Angle. 



I - V 





0° 00' 



o. 1577 



3.4621 



5- '5 



0. 1290 



2. 8207 



10. 30 



0. 1087 



2.4239 



10.45 



0. 0961 



2. 1308 



Sum, 



0-4915 



10-8375 



Hence we obtain, by the equation to find the centre of the 

 conic (66), 



2Lx -f M = o 



, 10.8375 



x = - f = 1 1.02 m. 



0.4915 



