JACKS AND JENNETS 



187 



authoritative standpoint, as only one or two of these breeds 

 have become fundamentally important in developing the 

 mule industry, which is the basis of the usage of jacks and 

 jennets. The jacks now most largely used for mule pro- 

 duction are an American product, having originated from 

 various crosses and selections from the following breeds and 

 others of lesser importance. The American or Mammoth 



Fig. 77. — Catalonian or Spanish jack. 



jack, which is significantly a product of Kentucky largely, is 

 most important in the mule industry of today. 



Catalonian. — ^The Catalonian breed is a native of northern 

 Spain. This is an important breed of jacks from an American 

 standpoint, owing to the relation of it to the mule-breeding 

 industry of this country. It is the foundation breed of the 

 American or Mammoth jack, which is strictly an American 

 product. The breed averages from 15 to 15-2 hands high and 

 has good style, symmetry, and action. The bone is fine in 



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