The Breeds of Horses 13 
similar to the Thoroughbred. The trotter is the larger and the 
ribs are somewhat longer, particularly the rear ones, giving a 
straighter underline than in the Thoroughbred. Powerful trotting 
or pacing action is essential. It must be true, varying neither to 
the right nor left. Long reaching knee and hock action with the 
Fia. 5. —The Standardbred. Trotting and pacing horse. 
feet picked up smartly is most essential. This is America’s principal 
race-horse and speed at the trot is the major requirement (Fig. 5). 
17. Trotting and pacing records. — There are many standard 
trotting and pacing events, and while the horses at the top of such 
events are constantly changing, yet the fastest records seem worthy 
of special mention. 
