I believe that he invariably makes use of the four senses

I believe that he invariably makes use of the four senses

I believe that he invariably makes use of the four senses,
SEEING,
HEARING,
SMELLING, and
FEELING, in all of his examinations, of which the sense of feeling is, perhaps, the most important. And I think that in the experiment with the robe, his gradual approach and final touch with his nose was as much for the purpose of feeling as anything else, his sense of smell being so keen that it would not be necessary for him to touch his nose against anything in order to get the proper scent; for it is said that a horse can smell a man at a distance of a mile. And if the scent of the robe was all that was necessary he could get that several rods off. But we know from experience, that if a horse sees and smells a robe a short distance from him he is very much frightened (unless he is used to it) until he touches or feels it with his nose; which is a positive proof that feeling is the controlling sense in this case.

Fonte: Tamming Horses