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THE HORSE AND ITS VARIETIES. 603 
The horse (Zguus caballus Linn.) is the most useful of all 
domestic animals, and next to ships a prime means of the 
diffusion of civilization. By artificia] selection a great num- 
‘Taqea LoL, {Wy Ig worg —‘snuvjododdry oy} Jo Uojo}oYS—"esVd “BL 
ber of varieties, races, and strains have been produced, 
adapted for the performance of different kinds of work. The 
horse only exists in a domesticated state. Sanson states that 
