The emotional side of the horse's nature seems little more developed than its rational. Although they have a certain affection for the hand which feeds them, and in a mild way are disposed to form friendships with other animals, they are not really affectionate, and never, so far as I have been able to find, show any distinct signs of grief at separation from their masters or of pleasure when they return to them. Although there are many stories appearing to indicate a certain faithfulness in horses which have remained beside their fallen and wounded riders, the facts do not justify us in supposing that such actions are due to the affection a dog clearly feels. [Illustration: Horses for Towing on the Beach in Holland] We have been singularly led astray by a chance use of the epithet "horse," which has come to be applied to many organic forms and functions where strength is indicated. Thus, in the case of plants we speak of "horse-radish" or "horse-mint," denoting thereby spices which have strong qualities. Horse-chestnut is another instance of the application of the term to plants. It chanced that "horse-sense" came to be used to indicate a sound understanding, and in an obscure way, but in a manner common with words, this has led to a vague implication of mental capacity in the animals whence the term is derived. The fact is that our horses, as far as their mental powers are concerned, appear to be the least improvable of our great domesticated animals. [Illustration: A Hurdle Jumper] Little elastic as the horse appears to be on the psychic side of its nature, in its physical aspects it is one of the most plastic of all the forms subjected to the breeder's art. It requires no more than a glance at the streets of our large cities to see how great is the range in size, form, and carriage of these animals which may be found in any of our great centres of civilization. We readily perceive that these variations have a distinct relation to the several divisions of human activity in which this creature has a share. The massive cart-horse, weighing it may be as much as eighteen hundred or two thousand pounds, heavy limbed, big headed, unwilling to move at a pace faster than a slow trot, yet not without the measure of beauty seemingly inseparable from the species, contrasts very markedly with the alert saddle animal bred for speed and grace, and for the easy movement which makes it comfortable to the equestrian. Between these extremes we may note minor differences which, though they may not strike those persons who take only a commonplace view of the creatures, are most marked to the initiated. The trotter, the coach horse, the strong but nimble animals which are used in fire-engines and other heavy carriages which have to be swiftly moved, mark the results of breeding designed to insure particular qualities, and show how readily the physical features of the animal can be made to fit to our desires.