112 EXAMINATION OF HORSES 
absolute flatness, but it is what gives you an impression ot 
flatness. The bigness is really so. Now to: all squares 
there are four sides and four angles, and so in our square 
hock. Take the four angles as in our diagram, and 
you find them formed by— . 
1. The internal maleolus (Fig. 6,'). 
2. The point of the hock (Fig. 6,°). 
3. Head of tibia (inner anterior aspect) (Fig. 6,°). 
4. Head of inner splint-bone (Fig. 6,'). 
Please to notice that the last three of these never alter 
their relative positions. You do not find the point of 
the hock approaching or receding from the head of the 
inner splint bone; neither do you find the head of the’. 
inner splint bone approaching: or receding from the inner 
anterior aspect of the head of the tibia. These points 
‘are always the same distance from oneanother. The re- 
maining point, however, formed by the internal maleolus, 
approaches * and recedes from *, whenever the hock’ 
bends (see Fig. 7), when our square disappears. So that 
7 
Py 
Fic. 7. 
you see when the horseman speaks of his admiration of 
