120 THE BREEDS OF LIVE-STOCK 
horses from which the French coach has been evolved. 
They are still called Demi-sang (half-blood) in France. 
The German Coach horse has less of the Thoroughbred 
character and foundation, but even here ‘‘ the trail of the 
blood ’’ may be traced. The Yorkshire coach horse repre- 
sents a Thoroughbred-Cleveland Bay cross. The repre- 
sentative light-harness horse is the American trotter, and 
the two individuals accredited with being the foundation 
sires are Imp. Messenger, Thoroughbred, and Justin Mor- 
gan, said to be of Thoroughbred extraction. The Ameri- 
can Saddle Horse, as a breed, is descendant from Denmark, 
Thoroughbred, son of Imp. Hedgeford, and repeated in- 
fusions of Thoroughbred blood are stilladmitted. Further- 
more, the ranks of the hunter, jumper and polo pony 
classes, not breeds, but market types, are chiefly filled by 
either full- or part-bred blood horses. 
133. Part-bred horses. — In accordance with the idea 
that the term Thoroughbred implies that a horse is totally 
of the blood, the term part-bred has become a common 
means of designating a horse that is not altogether, but 
only partly, of the blood. It is even customary further to 
indicate the proportion of hot or Thoroughbred blood, 
by applying the terms two-parts or half-bred to the get of 
a Thoroughbred sire out of a common bred mare, and 
three-parts or three-quarters bred to the individual whose 
sire was a Thoroughbred, while his dam was two-parts 
bred, as above. In those sections of the country where 
Thoroughbred sires have been available, horses of this 
fractional breeding are common. As a matter of fact, 
horses produced in this way have such a wide field of use- 
fulness as to keep them in steady demand ; therefore this 
is a line of breeding that may be strongly commended to 
many farmers. While these horses are produced principally 
