368 



ANIMAL MECHANICS. 



5. Glutceus secundus (/3). — This muscle takes its origin 

 from the upper two-thirds of the entire surface of the outer 

 side of the ilium, and is inserted into the whole of the top 

 and outer surface of the great trochanter. It is shown in 



Fig. 95. 



Fig. 95, where AB is the curved middle line of its origin, 

 and AB 1 the curved middle line of its insertion. Dividing 

 the angle AOB into three parts, we obtain— 



