PROGEESSION ON THE LAND. 



55 



the knee-joint backwards, and the ankle-joint neither back- 

 wards nor forwards. AYhen the body or limbs are inclined 



Fig. 26.— Skeleton of Man. Compare with fig. 4, p. 21, and fig. 24, p. 47.— Original 



obliquely, or slightly flexed, the range of motion is increased. 



